Cisco Systems DGS-1224T manual Blinking

				When there is reception or
			Blinking	transmission (or Activity)
				of data in any port
			Light off	No link detected
				When there is a secure
		Green	Solid Light	connection (or link) to
				1000Mbps device in a port
	Speed			When there is a secure
		Amber	Solid Light	connection (or link) to
				100Mbps device in any of
				the ports
		Off	Light off	Possible link at 10M or no
				link
				When there is a secure
			Solid Light	connection (or link) to
				Ethernet device in any of
	Link/Act	Green		the ports
			Blinking	When there is reception or
				transmission (or Activity)
LED Per				of data occurring in a port
SFP Port
			Light off	No link
				When there is a secure
		Green	Solid Light	connection (or link) to a
	1000Mbps			1000Mbps device in any of
				the ports
		Off	Light off	No link

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