Panel Layout; The Front Panel; The Back Panel - TP-Link TD-8840T User Manual

1.3 Panel Layout

1.3.1 The Front Panel

The Router's LEDs are located on the front panel (View from left to right). They indicate the
device's working status. For details, please refer to LED Explanation.
LED Explanation:
Name Status
Power
ADSL
Flash
Flash
Internet
1~4 (LAN)
Flash

1.3.2 The Back Panel

The Router's ports, where the cables are connected, and RESET button are located on the back
Figure 1-1
On Power is on.
Off Power is off.
On The ADSL port is linked up.
The ADSL negotiation is in progress.
Off The ADSL port is linked down.
On A successful PPP connection has been built.
Data is being transferred over the Internet.
There is no successful PPP connection or the Router works
Off
on Bridge mode.
There is a successful connection on the corresponding 1~4
On
(LAN) port but no activity.
There is no connection on the corresponding 1~4 (LAN) port
Off
or the connection is abnormal.
Data is being transferred over the 1~4 (LAN) port
Figure 1-2
TD-8840T ADSL2+ Modem Router User Guide
Indication
4