SMC Networks SMC8748ML3, SMC8724ML3 manual Optional Redundant Power Unit, Power Supply Sockets

		DESCRIPTION OF HARDWARE
	Table 1-2 System Status LEDs (Continued)
LED	Condition	Status
Stack	Green	Uplink and downlink operating normally.
Link
	Flashing Green	Uplink has failed.
	Flashing Amber	Downlink has failed.
	Off	No stacking link present.
Module	Green	An expansion module is installed in the slot.
	Flashing green	An installed expansion module has been
		disabled.
	Off	There is no module installed.
Stack ID	1-8	Indicates the switch stack ID.
		The Master unit is numbered 1.
		Slave units are numbered 2-8.
	Off	In standalone mode.

Optional Redundant Power Unit

SMC supports an optional Redundant Power Unit (RPU), that can supply power to the switch in the event of failure of the internal power supply.

Power Supply Sockets

There are two power sockets on the rear panel of each switch. The standard power socket is for the AC power cord. The socket labeled “RPU” is for the optional Redundant Power Unit (RPU).

Power Socket Redundant Power Socket

Figure 1-5 Power Supply Sockets

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