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Port Mode LED
The port mode LED on the 3Com Baseline Switch 2928-PWR Plus/3Com Baseline Switch 2928-HPWR
Plus can display the working status of a port for you to obtain more device information. You can use the
port mode switching button to change the status of the port mode LED.
Table 1-8 3Com Baseline Switch 2928-PWR Plus/3Com Baseline Switch 2928-HPWR Plus port mode
LED description
LED Status Description
Solid green Indicates port rate.
Mode
Blinking green (1 Hz) Indicates port PoE power supply.
10/100/1000Base-T Auto-Sensing Ethernet Port Status LED
z Each port of the 3Com Baseline Switch 2952-SFP Plus has a bi-color LED indicating its status;
whereas each port of other models of the 3Com Baseline Switch 2900 Family has two LEDs, with
only one in the ON state at a time.
z For each port of the 3Com Baseline Switch 2928-PWR Plus and 3Com Baseline Switch
2928-HPWR Plus, the port mode LED and the status LED together indicate the port operation
status.
Table 1-9 10/100/1000Base-T auto-sensing Ethernet port LEDs description
Switch model
Port
mode
LED
Ethernet port status
LED
Meaning
On
The port operates at a rate of 1000
Mbps
Fast blinking
Data is being transmitted or received at
1000 Mbps
Green
Off
The port is not up or does not operate at
1000 Mbps
On
The port operates at a rate of 10/100
Mbps
Fast blinking
Data is being transmitted or received at
10/100 Mbps
Blinking (3
Hz)
The POST has failed
3Com Baseline
Switch
2920-SFP Plus
3Com Baseline
Switch
2928-SFP Plus
—
Yellow
Off
The port is not up or does not operate at
10/100 Mbps