Dell DCSM manual

1	voltage selection switch	See the safety instructions in the Product Information Guide for more information.
2	power connector	Insert the power cable.
3	back panel connectors	Plug USB, audio, and other devices into the appropriate connector.
4	card slots	Access connectors for any installed PCI and PCI Express cards.

1	link integrity	Green — A good connection exists between a 10-Mbps network
	light	and the computer.
		Orange — A good connection exists between a 100-Mbps network
		and the computer.
		Off — The computer is not detecting a physical connection to the
		network.
2	network adapter	To attach your computer to a network or broadband device, connect one
	connector	end of a network cable to either a network jack or your network or
		broadband device. Connect the other end of the network cable to the
		network adapter connector on the back panel of your computer. A click
		indicates that the network cable has been securely attached.

NOTE: Do not plug a telephone cable into the network connector.

On computers with a network connector card, use the connector on the card.