3Com 2900 manual Led

		Port	Ethernet port status
Switch model		mode				Meaning
			LED
		LED
			Solid green			The port operates at a rate of 1000
						Mbps
			Fast blinking green			Data is transmitted or received at a rate
						of 1000 Mbps
3Com Baseline
						The port operates at a rate of 10/100
Switch	—		Solid yellow
						Mbps
2952-SFP Plus
			Fast blinking yellow			Data is transmitted or received at a rate
						of 10/100 Mbps
			Off			The port is not up or the POST has
						failed
				On	The port operates at a rate of 1000
					Mbps
			Green	Fast blinking	Data is transmitted or received at a rate
					of 1000 Mbps
				Off		The port is not up or does not operate at
						1000 Mbps
		Solid
		green		On	The port operates at a rate of 10/100
		(rate			Mbps
		mode)
				Fast blinking	Data is transmitted or received at a rate
					of 10/100 Mbps
			Yellow
				Blinking (3	The POST has failed
3Com Baseline				Hz)
Switch				Off		The port is not up or does not operate at
2928-PWR Plus						10/100 Mbps.
3Com Baseline
				On	PoE power supply is normal.
Switch
2928-HPWR					Power consumption of the device
Plus
				Blinking at 3	attached to the port exceeds the upper
			Green		limit of the power supply consumption of
				Hz	the port, or the available power of the
					switch is not enough for power supply of
	Blinking				the port.
	green			Off		No PoE power supply is provided on the
	(PoE					port.
	mode)
				On	The device connected to the interface is
					not a PD device or a PoE failure occurs
			Yellow	Blinking (3	The POST has failed
				Hz)
				Off	No PoE power supply is provided on the
					port or PoE power supply is normal.

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