Hardware
Overview
This section describes the front and rear panels for each model. Refer to the Zyxel Device’s Quick Start Guides to see the product drawings and how to make the hardware connections.
LED Indicators Panel
The following shows the LED indicator panel and the LED behaviors of the Zyxel Device. None of the LEDs are on if the Zyxel Device is not receiving power. See Ports Panel to check whether your Zyxel Device has ports for multi-gigabit Ethernet, SFP, PON, or phone connections.
DSL (Digital Subscriber Line) Routers
Ethernet Gateways and Routers
PON (Passive Optical Network) Routers
DX3300-T0 and DX3301-T0
LED Indicators (DX3300-T0 and DX3301-T0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (DX3300-T0) 
led
color
status
description
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detected an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
Off
The Zyxel Device is not receiving power.
DSL or Ethernet WAN
Green
On
The VDSL or ADSL link is up.
Slow Blinking
The Zyxel Device is looking for a VDSL or ADSL link.
Fast Blinking
The Zyxel Device is initializing the VDSL or ADSL link.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (DX3301-T0) 
LED
COLOR
STATUS
DESCRIPTION
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detected an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
DSL or Ethernet WAN
Green
On
The VDSL or ADSL link is up.
Slow Blinking
The Zyxel Device is looking for a VDSL or ADSL link.
Fast Blinking
The Zyxel Device is initializing the VDSL or ADSL link.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Phone1 and Phone2
Green
On
A SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
 
Off
The Zyxel Device is turned off.
The VoIP function is not activated.
The SIP account is not enabled.
The phone port does not have a SIP account registered.
DX3300-T1
LED Indicators (DX3300-T1)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (DX3300-T1) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
DSL WAN
Green
On
The ADSL or VDSL link on the WAN is up.
Slow Blinking
The ADSL or VDSL link is down, and the Zyxel Device is looking for an ADSL or VDSL link.
Fast Blinking
The Zyxel Device is initializing the ADSL or VDSL link.
Off
The ADSL or VDSL link is down.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving traffic.
Red
On
The Zyxel Device attempted to obtain an WAN IP but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
 
Off
There is no Internet connection or the gateway is in bridge mode.
LAN1 to LAN3
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the Local Area Network (LAN) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
LAN4 or WAN
Green
On
LAN mode: The Zyxel Device has a successful Ethernet connection with a device on the LAN4 or WAN port.
WAN mode: The Ethernet WAN connection is up on the LAN4 or WAN port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN4 or WAN port.
Off
LAN mode: The Zyxel Device does not have an Ethernet connection with a device on the LAN4 or WAN port.
WAN mode: The Ethernet WAN connection on the LAN4 or WAN port is down.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 2.4 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 2.4 GHz Wi-Fi client through WPS.
 
Off
The 2.4 GHz Wi-Fi network is not activated.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 5 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 5 GHz Wi-Fi client through WPS.
 
Off
The 5 GHz Wi-Fi network is not activated.
DX5401-B0 and DX5401-B1
LED Indicators (DX5401-B0 and DX5401-B1)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (DX5401-B0 and DX5401-B1) 
LED
COLOR
STATUS
DESCRIPTION
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
DSL or Ethernet WAN
Green
On
The VDSL line or a successful 100 or 1000 Mbps Ethernet connection on the WAN is up.
Slow Blinking
The Zyxel Device is looking for a VDSL line.
Fast Blinking
The Zyxel Device is initializing the VDSL line.
Off
There is no Ethernet connection on the WAN.
Amber
On
The ADSL line on the WAN is up.
Slow Blinking
The Zyxel Device is looking for an ADSL line
Fast Blinking
The Zyxel Device is initializing the ADSL line.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to 4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to and from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Amber
On
The WPS process fails.
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
Off
The 2.4 GHz Wi-Fi network is not activated.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Amber
On
The WPS process fails.
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Off
The 5 GHz Wi-Fi network is not activated.
Phone1 and Phone2
Green
On
A SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
SFP
Green
On
The SFP port is connected to the ISP’s ONT and the Zyxel Device is receiving optical signals normally, or the SFP port’s Ethernet WAN connection is up.
Off
The connection to the ISP’s ONT or the Ethernet WAN connection is down.
EX3300-T0 and EX3301-T0
LED Indicators (EX3300-T0 and EX3301-T0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX3300-T0) 
led
color
status
description
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detected an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
Off
The Zyxel Device is not receiving power.
Ethernet WAN
Green
On
The WAN connection is active and ready to use.
Slow Blinking
The Zyxel Device is looking for a WAN connection.
Fast Blinking
The Zyxel Device is initializing the WAN connection.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX3301-T0) 
LED
COLOR
STATUS
DESCRIPTION
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detected an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
Ethernet WAN
Green
On
The WAN connection is active and ready to use.
Slow Blinking
The Zyxel Device is looking for a WAN connection.
Fast Blinking
The Zyxel Device is initializing the WAN connection.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to and from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Phone1 and Phone2
Green
On
A SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
 
Off
The Zyxel Device is turned off.
The VoIP function is not activated.
The SIP account is not enabled.
The phone port does not have a SIP account registered.
EX3300-T1
LED Indicators (EX3300-T1)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX3300-T1) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving traffic.
Red
On
The Zyxel Device attempted to obtain an WAN IP but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
 
Off
There is no Internet connection or the gateway is in bridge mode.
LAN1 to LAN3
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the Local Area Network (LAN) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
LAN4 or WAN
Green
On
LAN mode: The Zyxel Device has a successful Ethernet connection with a device on the LAN4 or WAN port.
WAN mode: The Ethernet WAN connection is up on the LAN4 or WAN port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN4 or WAN port.
Off
LAN mode: The Zyxel Device does not have an Ethernet connection with a device on the LAN4 or WAN port.
WAN mode: The Ethernet WAN connection on the LAN4 or WAN port is down.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 2.4 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 2.4 GHz Wi-Fi client through WPS.
 
Off
The 2.4 GHz Wi-Fi network is not activated.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 5 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 5 GHz Wi-Fi client through WPS.
 
Off
The 5 GHz Wi-Fi network is not activated.
EX3500-T0 and EX3501-T0
LED Indicators (EX3500-T0)
LED Indicators (EX3501-T0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX3500-T0 and EX3501-T0) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
WAN
Green
On
The Ethernet link on the WAN is up.
Off
The Ethernet link on the WAN is down.
 
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving Internet data.
Red
On
The Zyxel Device attempted to obtain an WAN IP but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
 
Off
There is no Internet connection or the gateway is in bridge mode.
LAN1 to LAN3
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the Local Area Network (LAN) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 2.4 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 2.4 GHz Wi-Fi client through WPS.
 
Off
The 2.4 GHz Wi-Fi network is not activated.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is sending or receiving data to or from 5 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to a 5 GHz Wi-Fi client through WPS.
 
Off
The 5 GHz Wi-Fi network is not activated.
Phone1 and Phone2
Green
On
A SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There’s voice message in the corresponding SIP account.
 
Off
The phone port has a telephone connection, but it is not in use. VoIP is disabled, or there is no registered SIP account defined for the phone port.
EX3600-T0
LED Indicators (EX3600-T0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX3600-T0) 
led
color
status
description
Power
Green
On
The Zyxel Device is receiving power and ready for use.
The Zyxel Device is in Extender mode and the MPro Mesh pairing process is done.
Blinking
The Zyxel Device is booting up.
The Zyxel Device is in Extender mode and under the MPro Mesh pairing process.
Red
On
The Zyxel Device detected an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
Ethernet WAN
Green
On
The Ethernet WAN port is connected successfully.
 
Off
The Ethernet WAN port is not connected successfully.
 
Internet
Green
On
The Internet connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
The Zyxel Device is in Extender mode and the Internet connection to the gateway modem or controller is weak.
 
Off
There is no Internet connection or the gateway is in Bridge mode.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The link is down or disabled.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Amber
On
The Zyxel Device is in Extender mode and under the MPro Mesh pairing process.
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
The Zyxel Device is in Extender mode and the MPro Mesh pairing process has failed.
 
Off
The link is down or disabled.
EX5401-B0 and EX5401-B1
LED Indicators (EX5401-B0 and EX5401-B1)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX5401-B0 and EX5401-B1) 
LED
COLOR
STATUS
DESCRIPTION
Power
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is self-testing.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
Ethernet WAN
Green
On
The WAN connection is up.
Slow Blinking
The Zyxel Device is looking for the WAN connection.
Fast Blinking
The Zyxel Device is initializing the WAN connection.
Off
There is no Ethernet connection on the WAN.
Amber
On
The ADSL line on the WAN is up.
Slow Blinking
The Zyxel Device is looking for an ADSL line
Fast Blinking
The Zyxel Device is initializing the ADSL line.
Internet
Green
On
The Zyxel Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a DHCP server), PPP negotiation was successfully completed (if used) and the DSL connection is up.
Blinking
The Zyxel Device is sending or receiving IP traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to make an IP connection but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN1 to LAN4
Green
On
The Zyxel Device has a successful 10, 100, or 1000 Mbps Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN at 10, 100, or 1000 Mbps.
Off
The Zyxel Device does not have an Ethernet connection with the LAN.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Amber
On
The WPS process fails.
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
Off
The 2.4 GHz Wi-Fi network is not activated.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Amber
On
The WPS process fails.
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Off
The 5 GHz Wi-Fi network is not activated.
Phone1 and Phone2
Green
On
A SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
SFP
Green
On
The SFP port is connected to the ISP’s ONT and the Zyxel Device is receiving optical signals normally, or the SFP port’s Ethernet WAN connection is up.
Off
The connection to the ISP’s ONT or the Ethernet WAN connection is down.
EX5600-T1, EX5601-T0, and EX5601-T1
LED Indicators (EX5600-T1)
LED Indicators (EX5601-T0)
LED Indicators (EX5601-T1)
*The SFP LED is for the Zyxel Device with an SFP port only; see Overview for more information.
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX5600-T1, EX5601-T0, and EX5601-T1) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
2.5G WAN
Green
On
The Zyxel Device has a successful Ethernet connection on the 2.5G WAN port.
Off
The Zyxel Device does not have an Ethernet connection on the 2.5G WAN port.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to obtain an WAN IP but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
LAN
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the Local Area Network (LAN).
Blinking
The Zyxel Device is sending or receiving data to or from the LAN.
Off
The Zyxel Device does not have an Ethernet connection on the LAN.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
 
Off
The 2.4 GHz Wi-Fi network is not activated.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to 5 GHz Wi-Fi clients through WPS.
 
Off
The 5 GHz Wi-Fi network is not activated.
Phone
Green
On
All phone ports are on-hook. An SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
A telephone connected to one of the phone port has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
A telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
Off
All phone ports are on-hook. The VoIP function is disabled, or there is no registered SIP account defined for any of the phone ports.
SFP
Green
On
The SFP port is connected to the ISP’s ONT and the Zyxel Device is receiving optical signals normally, or the SFP port’s Ethernet WAN connection is up.
Off
The connection to the ISP’s ONT or the Ethernet WAN connection is down.
EX7501-B0
LED Indicators (EX7501-B0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX7501-B0) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
 
Off
The Zyxel Device is not receiving power.
10G WAN
Green
On
The Zyxel Device has a successful Ethernet connection on the 10G WAN port.
Off
The Zyxel Device does not have an Ethernet connection on the 10G WAN port.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving traffic.
Off
There is no Internet connection or the gateway is in bridged mode.
Red
On
The Zyxel Device attempted to obtain an WAN IP but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
10G LAN
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the 10G LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the 10G LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the 10G LAN port.
LAN1 to LAN4
 
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
 
Off
The 2.4 GHz Wi-Fi network is not activated.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Amber
Blinking
The Zyxel Device is connecting to 5 GHz Wi-Fi clients through WPS.
 
Off
The 5 GHz Wi-Fi network is not activated.
Phone
Green
On
All phone ports are on-hook. An SIP account is registered for at least one phone port, and there is no voice message in the corresponding SIP account.
Blinking
At least one telephone connected to one of the phone ports has its receiver off the hook or there is an incoming call. There is no voice message in the corresponding SIP account.
Amber
On
All phone ports are on-hook. A SIP account is registered for the phone port and there is a voice message in the corresponding SIP account.
Blinking
At least one telephone connected to the phone port has its receiver off the hook or there is an incoming call. There is voice message in the corresponding SIP account.
 
Off
All phone ports are on-hook. The VoIP function is disabled, or there is no registered SIP account defined for any of the phone ports.
USB
Green
On
A device is connected to the USB port.
Off
There is currently no device connected to the USB port.
EX7710-B0
LED Indicators (EX7710-B0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (EX7710-B0) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Blue
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up.
Red
On
The Zyxel Device detects an error while self-testing, or there is a device malfunction.
Blinking
The Zyxel Device is upgrading firmware.
Off
The Zyxel Device is not receiving power.
INTERNET
Blue
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving Internet data.
Red
On
The Zyxel Device attempted to obtain an WAN IP address but failed. Possible causes are no response from a DHCP server, no PPPoE response, PPPoE authentication failed.
Wi-Fi
Blue
On
The 2.4G, 5G or 6G Wi-Fi connection is activated.
Blinking
The Zyxel Device is sending or receiving data.
Off
The 2.4G, 5G or 6G Wi-Fi network is not ready or failed.
WPS
Green
Blinking
The WPS process is in progress.
Off
The WPS is not activated.
Amber
Blinking
The IPTV Wi-Fi network WPS is in progress.
PX3321-T1
LED Indicators (PX3321-T1)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (PX3321-T1) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up or upgrading firmware.
Off
The Zyxel Device is not receiving power.
PON
Green
On
The Zyxel Device is ready for PON connection.
Blinking
The Zyxel Device is setting up a PON connection.
Off
The Zyxel Device is not receiving an optical signal.
LOS
Red
On
The PON transceiver is not receiving an optical signal.
Blinking
The optical signal the PON transceiver receiving is too weak or too strong.
Off
The PON connection is ready.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is trying to build an Internet connection.
Off
The Zyxel Device’s WAN connection is down or in Bridge mode. You can select modes on the Network Setting > Broadband > Modify screen.
LAN 1 to 4
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The 2.4 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The 5 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is connecting to 5 GHz Wi-Fi clients through WPS.
Phone
Green
On
The phone port has a telephone connection, but it is not in use. A SIP account is registered for the phone port.
Blinking
The phone port has a telephone connection, and it is in use.
Off
The phone port has a telephone connection, but it is not in use. VoIP is disabled, or there is no registered SIP account defined for the phone port.
PX3321-T3
LED Indicators (PX3321-T3)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (PX3321-T3) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up or upgrading firmware.
Off
The Zyxel Device is not receiving power.
PON
Green
On
The Zyxel Device is ready for PON connection.
Blinking
The Zyxel Device is setting up a PON connection.
Off
The Zyxel Device is not receiving an optical signal.
LOS
Red
On
The PON transceiver is not receiving an optical signal.
Blinking
The optical signal the PON transceiver receiving is too weak or too strong.
Off
The PON connection is ready.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving Internet data.
Off
The Zyxel Device’s WAN connection is down or in Bridge mode. You can select modes on the Network Setting > Broadband > Modify screen.
LAN 1 to 4
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G
Green
On
The 2.4 GHz Wi-Fi is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The 2.4 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The 5 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is connecting to 5 GHz Wi-Fi clients through WPS.
Phone
Green
On
The phone port has a telephone connection, but it is not in use. A SIP account is registered for the phone port.
Blinking
The phone port has a telephone connection, and it is in use.
Off
The phone port has a telephone connection, but it is not in use. VoIP is disabled, or there is no registered SIP account defined for the phone port.
PX5301-T0
LED Indicators (PX5301-T0)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (PX5301-T0) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up or upgrading firmware.
Off
The Zyxel Device is not receiving power.
GPON WAN
Green
On
The Zyxel Device is ready for GPON connection.
Blinking
The Zyxel Device is setting up a GPON connection.
Off
The Zyxel Device is not receiving an optical signal.
LOS
Red
On
The GPON transceiver is not receiving an optical signal.
Blinking
The optical signal the GPON transceiver receiving is too weak.
Off
The Zyxel Device is receiving stable optical power.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving Internet data.
Off
There is no Internet connection or the Zyxel Device is in Bridge mode.
LAN 1 to LAN4
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The 2.4 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The 5 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Phone
Green
On
The phone port has a telephone connection, but it is not in use. A SIP account is registered for the phone port.
Blinking
The phone port has a telephone connection, and it is in use.
Off
The phone port has a telephone connection, but it is not in use. VoIP is disabled, or there is no registered SIP account defined for the phone port.
PX5302-00
LED Indicators (PX5302-00)
The following are the LED descriptions for your Zyxel Device.
LED Descriptions (PX5302-00) 
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The Zyxel Device is receiving power and ready for use.
Blinking
The Zyxel Device is booting up or upgrading firmware.
Off
The Zyxel Device is not receiving power.
GPON WAN
Green
On
The Zyxel Device is ready for GPON connection.
Blinking
The Zyxel Device is setting up a GPON connection.
Off
The Zyxel Device is not receiving an optical signal.
LOS
Red
On
The GPON transceiver is not receiving an optical signal.
Blinking
The optical signal the GPON transceiver receiving is too weak.
Off
The Zyxel Device is receiving stable optical power.
INTERNET
Green
On
The Zyxel Device has a WAN IP address (either static or assigned by a DHCP server) and the Internet connection is up.
Blinking
The Zyxel Device is sending or receiving Internet data.
Off
There is no Internet connection or the Zyxel Device is in Bridge mode.
LAN 3 to LAN1
Green
On
The Zyxel Device has a successful Ethernet connection with a device on the LAN (Local Area Network) port.
Blinking
The Zyxel Device is sending or receiving data to or from the LAN port.
Off
The Zyxel Device does not have an Ethernet connection on the LAN port.
2.4G WLAN or WPS
Green
On
The 2.4 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 2.4 GHz Wi-Fi clients.
Off
The 2.4 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 2.4 GHz Wi-Fi client.
5G WLAN or WPS
Green
On
The 5 GHz Wi-Fi network is activated.
Blinking
The Zyxel Device is communicating with 5 GHz Wi-Fi clients.
Off
The 5 GHz Wi-Fi network is not activated.
Amber
Blinking
The Zyxel Device is setting up a WPS connection with a 5 GHz Wi-Fi client.
Phone
Green
On
The phone port has a telephone connection, but it is not in use. A SIP account is registered for the phone port.
Blinking
The phone port has a telephone connection, and it is in use.
Off
The phone port has a telephone connection, but it is not in use. VoIP is disabled, or there is no registered SIP account defined for the phone port.
 
Ports Panel
The following shows the Zyxel Device ports panel and connection ports.
DSL (Digital Subscriber Line) Routers
Ethernet Gateways and Routers
PON (Passive Optical Network) Routers
DX3300-T0 and DX3301-T0
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (DX3300-T0)
Rear Panel (DX3301-T0)
The WPS and Wi-Fi ON/OFF buttons are on the right side of the rear panel of the Zyxel Device. The WPS button is the upper one, and the Wi-Fi ON/OFF button is the lower one.
WPS and Wi-Fi ON/OFF Buttons on the real panel (DX3300-T0 and DX3301-T0)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (DX3300-T0 and DX3301-T0) 
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button to return the Zyxel Device to the factory defaults.
PHONE1 and PHONE2
For DX3301-T0, connect analog phones to the PHONE ports to make phone calls.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
LAN4 to LAN1
LAN4 to LAN1 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps. For EX3300-T0, EX3301-T0, EX5401-B0, and EX5401-B1, use an Ethernet cable to connect the WAN port to a gateway or modem for Internet connection.
DSL
For DX3300-T0, DX3301-T0, DX5401-B0, and DX5401-B1, connect a DSL cable to the DSL port for Internet connection.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Wi-Fi ON/OFF
Press the Wi-Fi ON/OFF button for more than 2 seconds to enable the Wi-Fi function.
DX3300-T1
Place the Zyxel Device with the ports and buttons facing you and the feet at the bottom.
Rear Panel (DX3300-T1)
The WLAN and WPS buttons are on the right-hand side of the Zyxel Device. The WLAN button is the upper one, and the WPS button is the lower one.
WLAN and WPS Buttons on the Right-Hand Side (DX3300-T1)
The USB port is on the left-hand side of the Zyxel Device.
USB Port on the Left-Hand Side (DX3300-T1)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (DX3300-T1) 
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
LAN1 to LAN3
LAN1 to LAN3 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
LAN4 or WAN
The 1G LAN or WAN port supports speeds of 100 or 1000 Mbps.
LAN mode: Connect computers or other Ethernet devices to the LAN4 or WAN port for Internet access.
WAN mode: Connect the LAN4 or WAN port to a gateway or modem with an Ethernet cable for Internet connection.
RESET
Press the button to return the Zyxel Device to the factory defaults.
DSL
For DX3300-T1, connect a DSL cable to the DSL port for Internet connection.
WLAN
Press the WLAN button for more than 1 second to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
DX5401-B0 and DX5401-B1
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (DX5401-B0 and DX5401-B1)
The Wi-Fi and WPS buttons are on the right-hand side of the Zyxel Device. The Wi-Fi button is the upper one, and the WPS button is the lower one.
Wi-Fi and WPS Buttons on the Right-Hand Side (DX5401-B0 and DX5401-B1)
The USB port is on the left-hand side of the Zyxel Device.
USB Port on the Left-Hand Side (DX5401-B0 and DX5401-B1)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (DX5401-B0 and DX5401-B1) 
LABEL
DESCRIPTION
FIBER
For DX5401-B0, Insert a compatible SFP transceiver to the FIBER port and connect the fiber cable for Internet access.
DSL
Connect a DSL cable to the DSL port for Internet connection.
PHONE1 and PHONE2
Connect analog phones to the PHONE ports to make phone calls.
LAN1 to LAN4
LAN1 to LAN4 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps.
RESET
Press the button to return the Zyxel Device to the factory defaults.
POWER
Connect the power adapter and press the ON/OFF button to start the device.
Wi-Fi
Press the Wi-Fi button for more than 2 seconds to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
EX3300-T0 and EX3301-T0
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (EX3300-T0)
Rear Panel (EX3301-T0)
The WPS and Wi-Fi ON/OFF buttons are on the right side of the rear panel of the Zyxel Device. The WPS button is the upper one, and the Wi-Fi ON/OFF button is the lower one.
WPS and Wi-Fi ON/OFF Buttons (EX3300-T0)
WPS and Wi-Fi ON/OFF Buttons (EX3301-T0)
The following table describes the items on the ports panels of your Zyxel Device
Panel Ports and Buttons (EX3300-T0 and EX3301-T0) 
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button to return the Zyxel Device to the factory defaults.
PHONE1 and PHONE2
For EX3301-T0, connect analog phones to the PHONE ports to make phone calls.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
LAN4 to LAN1
LAN4 to LAN1 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps. For EX3300-T0, EX3301-T0, EX5401-B0 and EX5401-B1, use an Ethernet cable to connect the WAN port to a gateway or modem for Internet connection.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Wi-Fi ON/OFF
Press the Wi-Fi ON/OFF button for more than 2 seconds to enable the Wi-Fi function.
EX3300-T1
Place the Zyxel Device with the ports and buttons facing you and the feet at the bottom.
Rear Panel (EX3300-T1)
The WLAN and WPS buttons are on the right-hand side of the Zyxel Device. The WLAN button is the upper one, and the WPS button is the lower one.
WLAN and WPS Buttons on the Right-Hand Side (EX3300-T1)
The USB port is on the left-hand side of the Zyxel Device.
USB Port on the Left-Hand Side (EX3300-T1)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (EX3300-T1) 
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
LAN1 to LAN3
LAN1 to LAN3 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
LAN4 or WAN
The 1G LAN or WAN port supports speeds of 100 or 1000 Mbps.
LAN mode: Connect computers or other Ethernet devices to the LAN4 or WAN port for Internet access.
WAN mode: Connect the LAN4 or WAN port to a gateway or modem with an Ethernet cable for Internet connection.
RESET
Press the button to return the Zyxel Device to the factory defaults.
WLAN
Press the WLAN button for more than 1 second to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
EX3500-T0 and EX3501-T0
Place the Zyxel Device with the ports and buttons facing you and the feet at the bottom.
Rear Panel (EX3500-T0)
Rear Panel (EX3501-T0)
The WLAN and WPS buttons are on the right-hand side of the Zyxel Device. The WLAN button is the upper one, and the WPS button is the lower one.
WLAN and WPS Buttons on the Right-Hand Side (EX3500-T0 and EX3501-T0)
The USB port is on the left-hand side of the Zyxel Device.
USB Port on the Left-Hand Side (EX3500-T0 and EX3501-T0)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (EX3500-T0 and EX3501-T0)
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps. Use an Ethernet cable to connect the WAN port to a gateway or modem for Internet connection.
LAN1 to LAN3
LAN1 to LAN3 are 1G LAN ports that support speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
Phone1 or Phone2
Connect analog phones to the PHONE ports to make phone calls.
RESET
Press the button to return the Zyxel Device to the factory defaults.
WLAN
Press the WLAN button for more than 1 second to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
EX3600-T0
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (EX3600-T0)
The WPS and Wi-Fi ON/OFF buttons are on the right side of the rear panel of the Zyxel Device. The WPS button is the upper one, and the Wi-Fi ON/OFF button is the lower one.
WPS and Wi-Fi ON/OFF Buttons (EX3600-T0)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (EX3600-T0) 
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
LAN4 to LAN1
LAN4 to LAN1 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps. Use an Ethernet cable to connect the WAN port to a gateway or modem for Internet connection.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Wi-Fi ON/OFF
Press the Wi-Fi ON/OFF button for more than 2 seconds to enable the Wi-Fi function.
EX5401-B0 and EX5401-B1
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (EX5401-B0 and EX5401-B1)
The Wi-Fi and WPS buttons are on the right-hand side of the Zyxel Device. The Wi-Fi button is the upper one, and the WPS button is the lower one.
Wi-Fi and WPS Buttons on the Right-Hand Side (EX5401-B0 and EX5401-B1)
The USB port is on the left-hand side of the Zyxel Device.
USB Port on the Left-Hand Side (EX5401-B0 and EX5401-B1)
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (EX5401-B0 and EX5401-B1)
LABEL
DESCRIPTION
FIBER
Insert a compatible SFP transceiver to the FIBER port and connect the fiber cable for Internet access.
PHONE1 and PHONE2
Connect analog phones to the PHONE ports to make phone calls.
LAN1 to LAN4
LAN1 to LAN4 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
WAN
The 1G WAN port supports speeds of 100 or 1000 Mbps. For EX3300-T0, EX3301-T0, EX5401-B0, and EX5401-B1, use an Ethernet cable to connect the WAN port to a gateway or modem for Internet connection.
RESET
Press the button to return the Zyxel Device to the factory defaults.
POWER
Connect the power adapter and press the ON/OFF button to start the device.
Wi-Fi
Press the Wi-Fi button for more than 2 seconds to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
EX5600-T1, EX5601-T0, and EX5601-T1
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes closer to the top.
Rear Panel (EX5600-T1)
Rear Panel (EX5601-T0 and EX5601-T1)
*Refer to Overview to see if your Zyxel Device supports the SFP port.
The Wi-Fi and WPS button are on the right-hand side of the Zyxel Device. The Wi-Fi button is the upper one, and the WPS button is the lower one.
Wi-Fi and WPS Buttons on the Right-Hand side (EX5600-T1, EX5601-T0, and EX5601-T1)
The USB port is on the left-hand side of the Zyxel Device.
USB port on the Left-Hand Side (EX5600-T1, EX5601-T0, and EX5601-T1)
 
 
The following table describes the items on the ports panels of your Zyxel Device.
Panel Ports and Buttons (EX5600-T1, EX5601-T0, and EX5601-T1) 
LABEL
DESCRIPTION
SFP
For EX5601-T0, insert a compatible SFP transceiver to the SFP port and connect a fiber optic or Ethernet cable for an (up to) 2.5 Gbps Internet connection.
PHONE1 and PHONE2
For EX5601-T0 and EX5601-T1, connect analog phones to the PHONE ports with RJ 11 cables for VoIP services.
2.5G WAN
The 2.5G WAN port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps and 2.5 Gbps.
For EX5600-T1 and EX5601-T1, use an Ethernet cable to connect the 2.5G WAN port to a gateway or modem for an (up to) 2.5 Gbps Internet connection.
For EX5601-T0, use an Ethernet cable to connect the 2.5G WAN port to a gateway or modem, or connect a fiber optic or Ethernet cable to the SFP port through an SFP transceiver for an (up to) 2.5 Gbps Ethernet connection.
2.5G LAN1
The 2.5G LAN1 port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps and 2.5 Gbps. Connect computers or other Ethernet devices to the 2.5G LAN port for Internet access with speed up to 2.5 Gbps.
LAN2 to LAN4
LAN2 to LAN4 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
Wi-Fi
Press the Wi-Fi button for more than 2 seconds to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
EX7501-B0
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes at the bottom.
Bottom Panel (EX7501-B0)
The WLAN and WPS buttons are on the right-hand side of the Zyxel Device. The WLAN button is closer to you, and the WPS button is farther from you.
WLAN and WPS Buttons on the Right-Hand Side (EX7501-B0)
The following table describes the items on the ports panels of EX7501-B0.
Panel Ports and Buttons (EX7501-B0) 
LABEL
DESCRIPTION
10G WAN
The 10G WAN port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps, 2.5 Gbps, 5 Gbps, and 10 Gbps. Connect an Ethernet cable to the 10G WAN port for an (up to) 10 Gbps Ethernet connection.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
10G LAN
The 10G LAN port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps, 2.5 Gbps, 5 Gbps, and 10 Gbps. Connect computers or other Ethernet devices to the 10G LAN port for Internet access with speed up to 10 Gbps.
LAN1 to LAN4
LAN1 to LAN4 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
PHONE1 and PHONE2
Connect analog phones to the PHONE ports with RJ-11 cables for VoIP services.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
POWER
Connect the power adapter and press the ON/OFF button to start the device.
WLAN
Press the WLAN button for more than 2 seconds to enable the Wi-Fi function.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
EX7710-B0
Place the Zyxel Device with the ports and buttons facing you and the feet at the bottom.
Rear Panel (EX7710-B0)
Panel Ports (EX7710-B0)
The following table describes the items on the ports panel of your Zyxel Device.
Panel Ports and Buttons (EX7710-B0)
LABEL
DESCRIPTION
WPS
Press the WPS button for more than 1 second to quickly set up a secure Wi-Fi connection between the Zyxel Device and a WPS-compatible client.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
ETHERNET 4 to 1
ETHERNET 4 to ETHERNET 1 are 1G ports support speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
10G LAN
The 10G LAN port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps, 2.5 Gbps, and 10 Gbps. Connect computers or other Ethernet devices to the 10G LAN port for Internet access with speed up to 10Gbps.
10G WAN
The 10G WAN port is a multi-gigabit Ethernet port that supports connection speeds of 1 Gbps, 2.5 Gbps, and 10 Gbps. Connect an Ethernet cable to the 10G WAN port for an (up to) 10Gbps Ethernet connection.
POWER
Connect the power adapter and press the ON/OFF button to start the device.
PX3321-T1
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes at the bottom.
Rear Panel (PX3321-T1)
The PON port is at the bottom of the Zyxel Device.
PX3321-T1 Bottom Panel (PON Port)
The following table describes the items on the ports panel of your Zyxel Device.
Panel Ports and Buttons (PX3321-T1)
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
LAN 4 to LAN1
LAN4 to LAN1 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
Phone
Connect analog phone to the PHONE port with RJ11 cable for VoIP services.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Press the WPS button once more than 3 seconds to enable or disable the Wi-Fi. The Wi-Fi is enabled by default.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
PON
Connect the fiber optic cable to the PON (Passive Optical Network) port for Internet access.
PX3321-T3
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes at the bottom.
Rear Panel (PX3321-T3)
The PON port is at the bottom of the Zyxel Device.
PX3321-T3 Bottom Panel (PON Port)
The following table describes the items on the ports panel of your Zyxel Device.
Panel Ports and Buttons (PX3321-T3)
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
WPS
Press the WPS button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Press the WPS button once more than 3 seconds to enable or disable the Wi-Fi. The Wi-Fi is enabled by default.
Phone
Connect analog phone to the PHONE port with RJ11 cable for VoIP services.
LAN 4 to LAN1
LAN4 to LAN1 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
PON
Connect the fiber optic cable to the PON (Passive Optical Network) port for Internet access.
PX5301-T0
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes at the bottom.
Rear Panel (PX5301-T0)
The PON port is at the bottom of the Zyxel Device.
PX5301-T0 Bottom Panel (PON Port)
The following table describes the items on the ports panel of your Zyxel Device.
Panel Ports and Buttons (PX5301-T0)
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
WPS / Wi-Fi On-Off
Press the WPS/Wi-Fi On-Off button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Press the WPS/Wi-Fi On-Off button once more than 3 seconds to enable or disable the Wi-Fi. The Wi-Fi is enabled by default.
LAN 4
2.5G
LAN 4 is a 2.5G multi-gigabit Ethernet port that supports connection speeds of 1 Gbps and 2.5 Gbps.
LAN 3 to LAN1
LAN1 to LAN3 are 1G ports supporting speeds of 100 or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
Phone
Connect analog phone to the PHONE port with RJ11 cable for VoIP services.
USB
The USB port is used for cellular WAN backup, file-sharing, and media server.
PON
Connect the fiber optic cable to the PON (Passive Optical Network) port for Internet access.
PX5302-00
Place the Zyxel Device with the ports and buttons facing you and the two wall-mounting holes at the bottom.
Rear Panel (PX5302-00)
The PON port is at the bottom of the Zyxel Device.
PX5302-00 Bottom Panel (PON Port)
The following table describes the items on the ports panel of your Zyxel Device.
Panel Ports and Buttons (PX5302-00)
LABEL
DESCRIPTION
POWER
Connect the power adapter and press the ON/OFF button to start the device.
RESET
Press the button for more than 5 seconds to return the Zyxel Device to the factory defaults.
WPS/Wi-Fi ON-OFF
Press the WPS/Wi-Fi ON-OFF button once within 3 seconds to quickly setup a secure Wi-Fi connection between the device and a WPS-compatible client.
Press the WPS/Wi-Fi ON-OFF button once more than 3 seconds to enable or disable the Wi-Fi. The Wi-Fi is enabled by default.
LAN 3
2.5G
LAN 3 is a 2.5G multi-gigabit Ethernet port that supports connection speeds of 1 Gbps and 2.5 Gbps.
LAN2 and LAN1
LAN2 and LAN1 are 1G ports supporting speeds of 10, 100, or 1000 Mbps. Connect computers or other Ethernet devices to Ethernet ports for Internet access.
PHONE
Connect analog phone to the PHONE port with RJ11 cable for VoIP services.
CATV
Connect an STB (Set Top Box) to the CATV port using a coaxial cable.
PON
Connect the fiber optic cable to the PON (Passive Optical Network) port for Internet access.
Transceiver Installation or Removal
Transceiver Installation
Use the following steps to install an SFP transceiver.
1 Attach an ESD preventive wrist strap to your wrist and to a bare metal surface.
2 Align the transceiver in front of the slot opening.
3 Make sure the latch is in the lock position (latch styles vary), then insert the transceiver into the slot with the exposed section of PCB board facing down.
4 Press the transceiver firmly until it clicks into place.
5 The Zyxel Device automatically detects the installed transceiver. Check the LEDs to verify that it is functioning properly.
6 Remove the dust plugs from the transceiver and cables (dust plug styles vary).
7 Identify the signal transmission direction of the fiber optic cables and the transceiver. Insert the fiber optic cable into the transceiver.
Transceiver Installation Example
Transceiver Removal
Use the following steps to remove an SFP transceiver.
1 Attach an ESD preventive wrist strap to your wrist and to a bare metal surface on the chassis.
2 Remove the fiber optic cables from the transceiver.
3 Pull out the latch and down to unlock the transceiver (latch styles vary).
*Make sure the transceiver’s latch is pushed all the way down, so the transceiver can be pulled out successfully.
4 Pull the latch, or use your thumb and index finger to grasp the tabs on both sides of the transceiver, and carefully slide it out of the slot.
*Do NOT pull the transceiver out by force. You could damage it. If the transceiver will not slide out, grasp the tabs on both sides of the transceiver with a slight up or down motion and carefully slide it out of the slot. If unsuccessful, contact Zyxel Support to prevent damage to your Zyxel Device and transceiver.
5 Insert the dust plug into the ports on the transceiver and the cables.
WPS Button
You can use the WPS button to quickly set up a secure Wi-Fi connection between the Zyxel Device and a WPS-compatible client by adding one device at a time.
To Activate WPS
1 Make sure the POWER LED is on and not blinking.
2 Press the WPS button once within 3 seconds (see the ports panel table of each Zyxel Device model in Ports Panel for more information) and release it.
3 Press the WPS button on another WPS-enabled device within range of the Zyxel Device (within 120 seconds). The WPS LED flashes green while the Zyxel Device sets up a WPS connection with the other wireless device.
4 Once the connection is successfully made, the WPS LED will light off.
RESET Button
If you forget your password or cannot access the Web Configurator, you will need to use the RESET button to reload the factory-default configuration file. This means that you will lose all configurations that you had previously. The password will be reset to the factory default (see the device label), and the LAN IP address will be “192.168.1.1”.
1 Make sure the POWER LED is on (not blinking).
2 To set the device back to the factory default settings, press the Reset button for more than 5 seconds or until the POWER LED begins to blink and then release it. When the POWER LED begins to blink, the defaults have been restored and the device restarts.