3Com 4510G manual Port Mode LED, Seven-Segment LED, Mark Status Description

Table 1-7RPS status LED

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

Port Mode LED

The port mode LED on the Switch 4510G 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 1-8Port mode LED description

LED	Status	Description
Mode	Steady green	Indicates port rate.
	Steady yellow	Indicates port duplex mode.

Seven-Segment LED

The seven-segment LED and the system status LED together indicate the operating status of the device. For details, refer to Table 1-9.

Table 1-9Seven-segment LED description (1)

		Status
LED	System status	Seven-segment LED	Description
	LED
	(PWR/SYS)
		The LED displays the specific numbers
Unit	Flashing green	one by one.	POST running. The LED
			displays the POST test ID.
		The LED flashes the specific numbers.	POST failed. The LED flashes
	Flashing red		the POST test ID of the failed
			test.
		A bar rotates clockwise around the
	Flashing green	LED.	Software loading
		The LED flashes F.
	Steady red		Fan failure

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