3com 4210 PWR 9-Port User Manual

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Introduction to the Switch 4210 Family PWR Switches
13
The Switch 4210 PWR
Front Panel LEDs
Power LED
Table 3 describes the power LED on the Switch 4210 PWR model.
10/100BASE-TX Autosensing Ethernet Port Status LED
There are two port status LEDs on both sides (yellow LED on the left and green LED 
on the right) of the 10/100BASE-TX Ethernet port on the Switch 4210 PWR 
models. They indicate the port’s active, link, duplex, and speed status.
In addition, there is an A/L LED and a D/S LED on each Switch 4210 PWR model. 
These two LEDs indicate the port status LEDs mode. When the A/L LED is on, the 
port status LEDs respectively indicate the port’s active status and link status. When 
the D/S LED is on, the port status LEDs respectively indicate the port’s duplex status 
and speed status. Either the A/L LED or the D/S LED is on at one time. For details, 
see Table 4.
You can change the mode of the port status LEDs by pressing the Mode button. 
After a switch is powered on, the A/L LED is on initially. If you press the Mode 
button, the D/S LED will be on. After that, if you press the Mode button again 
within 45 seconds, the A/L LED will be on again. Otherwise, the A/L LED will 
automatically be on 45 seconds later.
1000 Mbps Uplink Port Status LED
Table 5 describes the 1000 Mbps upline port status LED on the Switch 4210.
Table 3   The power LED on the Switch 4210 PWR models
LED 
Mark on the panel 
Status 
Description 
Power LED 
PWR 
ON 
The switch is powered on. 
OFF 
The switch is powered off.
Table 4   Port status LEDs on the Switch 4210 PWR models
Port status 
mode LED 
Port status LED
Description 
The A/L LED is 
on 
Yellow LED 
(left) 
BLINKING 
The port is in the active state and there is 
traffic on the port. 
OFF 
The port is in the active state but there is no 
traffic on the port. 
Green LED 
(right) 
ON 
The port is connected properly. 
OFF 
The port is not connected or is incorrectly 
connected. 
The D/S LED is 
on 
Yellow LED 
(left) 
ON 
The port operates in the full duplex mode. 
OFF 
The port operates in the half duplex mode. 
Green LED 
(right) 
ON 
The port rate is 100 Mbps. 
OFF 
The port rate is 10 Mbps.
Table 5   The 1000 Mbps uplink port status LED on 4210 PWR models
LED 
Mark on the 
panel Status 
Description 
1000 Mbps uplink port 
link LED 
LINK 
ON 
The port is connected properly. 
OFF 
The port is not connected or is 
incorrectly connected.