3com 4500G Quick Setup Guide

10/100/1000 
BASE-T 
Ethernet port 
status LED

Rate 
mode

Green

The port works at the rate of 1000 
Mbps; the LED blinks quickly when 
the port is sending or receiving 
data.

Yellow

The port works at the rate of 
10/100 Mbps; the LED blinks quickly 
when the port is sending or 
receiving data.

Yellow, 
blinking 
(3 Hz)

POST fails on the port. 

OFF

The port is not connected. 

Duplex 
mode

Green

The port works in full duplex mode; 
the LED blinks quickly when the 
port is sending or receiving data. 

Yellow

The port works in half duplex mode; 
the LED blinks quickly when the 
port is sending or receiving data. 

Yellow, 
blinking 
(3 Hz)

POST fails on the port. 

OFF

The port is not connected. 

1000Base SFP 
port status 
LED

This LED 
is not 
influence
d by the 
mode 
button

Green

The port works at the rate of 1000 
Mbps; the LED blinks quickly when 
the port is sending or receiving 
data. 

Yellow, 
blinking 
(3 Hz)

POST fails on the port.

OFF

The port is not connected. 

Table 3   Description on the LEDs of the Switch 4500G 24-Port/Switch 
4500G 48-Port Ethernet Switch (Continued)