TP-LINK TD-8817 User Manual

 

4 

 

Figure 2-1 

The LEDs are located on the front panel, they indicate the device’s working status. For details, 

please refer to LED Explanation. 

On 

The modem router is powered on. 

Power 

Off 

The modem router is off. Please ensure that the power 
adapter is connected correctly. 

On 

There is a device connected to this USB port. 

Flash 

The modem router is sending or receiving data over this 
USB port. 

USB 

Off 

There is no device connected to this USB port. 

On 

There is a device connected to this LAN port. 

Flash 

The modem router is sending or receiving data over this 
LAN port. 

LAN 

Off 

There is no device connected to this LAN port. 

On 

ADSL line is synchronized and ready to use. 

Flash 

The ADSL negotiation is in progress. 

ADSL 

Off 

ADSL synchronization fails. Please refer to 

 for 

troubleshooting. 

On 

The network is available with a successful Internet 
connection. 

Flash 

There is data being transmitted or received via the 
Internet. 

Internet 

Off 

There is no successful Internet connection or the modem 
router is operating in Bridge mode. Please refer to 

for troubleshooting. 



1.  If the ADSL LED is off, please check your Internet connection first. Refer to 

 for more information about how to make Internet connection 

correctly. If you have already made a right connection, please contact your ISP to make sure if 
your Internet service is available now. 

2.  If the Internet LED is off, please check your ADSL LED first. If your ADSL LED is also off, 

please refer to 

. If your ADSL LED is GREEN ON, please check your Internet