11
GS748T Gigabit Smart Switch
LED Designations

Port LE Ds

The following table describes the RJ-45, combo, and dedicated SFP port LED designations.

There are two LEDs for each RJ-45 port. Each SFP port has its own indication LED.

System LED

The following table describes the system LED designations.

LED Designation
Link/Speed/ACT LED mode for
copper ports 1 to 48:
•Off— No link established.
•Solid Green — A valid 1000 Mbps link is established.
•Blinking Green — The port is transmitting or receiving packets at
1000 Mbps.
•Solid Yellow — A valid 10/100 Mbps link is established.
•Blinking Yellow — The port is transmitting or receiving packets
at 10/100 Mbps.
If the media for ports 47 and 48 changes to SFP, the port LED for copper
ports 47 and 48 changes to off.
Link/ACT LED for SFP ports
47 to 50:
•Off — No SFP module link is established
•Solid Green — A valid 1000 Mbps SFP module link is established.
•Blinking Green — The port is transmitting or receiving packets
at 1000 Mbps.
If the media for ports 47 and 48 changes to copper, the port LED for the
SFP combo ports changes to off.
LED Designation
Power •Green — Device is powered on, run-time code is up and running
•Off — Power is not supplied to the device