3Com 4210G manual System Status LED, RPS Status LED, Port Mode LED, Status Description

System Status LED

The system status LED helps you determine the working status of the switch. Refer to Table 1-6 for the details.

Table 1-6System status LED description

LED	Status	Description
	Steady green	The switch is started normally.
	Flashing green (1 Hz)	The system is performing power-on self test (POST).
PWR
	Steady red	POST failed.
	Flashing yellow (1 Hz)	POST on some ports failed.
	Off	The switch is powered off.

RPS Status LED

The RPS status LED helps you determine the working status of the RPS of the switch. Refer to Table 1-7 for details.

Table 1-7RPS status LED (for Switch 4210G 24-Port, Switch 4210G 48-Port, Switch 4210G NT 24-Port, and Switch 4210G NT 48-Port)

LED	Status	Description
	Steady green	The AC input is normal, and the RPS is in the position or
		works normally.
RPS
	Steady yellow	The RPS input is normal, but the AC input fails or is not
		connected.
	Off	RPS is not connected.

Table 1-8RPS status LED (for Switch 4210G PWR 24-Port and Switch 4210G PWR 48-Port)

LED	Status	Description
	Steady green	The RPS input is normal, and the AC input works normally.
RPS	Steady yellow	The RPS input is normal, but the AC input fails or is not
		connected.
	Off	The RPS input is abnormal.

Port Mode LED

The port mode LED on the Switch 4210G 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.

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