ZyXEL Communications XGS4700-48F manual 53

				Chapter 3 Hardware Overview
Table 3	LEDs (continued)
LED		COLO	STATUS	DESCRIPTION
		R
1-48		Green	Blinking	The port is receiving or transmitting data at 1000 Mbps.
			On	The port has a successful 1000 Mbps connection.
		Amber	Blinking	The port is receiving or transmitting data 100 Mbps.
			On	The port has a successful 100 Mbps connection.
			Off	This link is disconnected.
10G
49-50		Blue	On	The Switch is connected to other switches through an
				uplink module in SLOT 1.
			Off	The Switch is not connected to other switches through an
				uplink module in SLOT 1.
51-52		Blue	On	The Switch is connected to other switches through an
				uplink module in SLOT 2.
			Off	The Switch is not connected to other switches through an
				uplink module in SLOT 2.

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XGS4700-48F User’s Guide