Dell 410 manual Back View of the Computer, Back Panel Connectors

		a CD player is operating.
9	diagnostic	Use the sequence of the diagnostic lights to help you troubleshoot a
	lights (4)	problem with your computer (see Diagnostic Lights).
10	headphone	Use the headphone connector to attach headphones and most kinds of
	connector	speakers.
11	microphone	Use the microphone connector to attach a personal computer
	connector	microphone for voice or musical input into a sound or telephony
		program.
12	Service Tag	Use the Service Tag to identify your computer when you access the Dell
		Support website or contact support.

Back View of the Computer

1	power	Insert the power cable.
	connector
2	back I/O	Plug USB, network, S/PDIF, and audio devices into the appropriate
	connectors	connectors (see Back Panel Connectors).
3	card slots (6)	Access connectors for any installed PCI or PCI Express cards.

Back Panel Connectors

1	link integrity light	• Green — A good connection exists between a 10-Mbps
		network and the computer.
		• Orange — A good connection exists between a 100-Mbps
		network and the computer.
		• Yellow — A good connection exists between a 1000-Mbps
		(1-Gbps) network and the computer.
		• Off — The computer is not detecting a physical connection to
		the network.
2	network adapter
	connector
		NOTICE: Do not plug a telephone cable into the network
		connector.
		Use the network adapter connector to attach your computer to a
		network or broadband device. Connect one end of a network cable
		to either a network jack or your network or broadband device, and
		then connect the other end of the network cable to the network