Allied Telesis AT-2701 Series Adapters - Manual (Page 14)

Overview
14
LED The AT-2701FXa model comes with a single combination LED that
indicates both the link status and activity status.
The AT-2701FTXa model comes with two LED’s. One LED indicates the
link status for either the copper or fiber port; the other indicates the activity
status for the port with the valid link.
Table 1 describes the link states that the LED indicates.
Table 1. LED Status
State Description
On Valid link.
Off No link.
Flashing The port is receiving or transmitting network packets
at 100 Mbps.