Dell C521 specifications Back to Contents

		NOTE: It is recommended that you use Category 5 wiring and
		connectors for your network. If you must use Category 3 wiring,
		force the network speed to 10 Mbps to ensure reliable operation.
3	network activity	Flashes a yellow light when the computer is transmitting or
	light	receiving network data. A high volume of network traffic may make
		this light appear to be in a steady "on" state.
4	surround sound	Use the (black) surround sound connector to attach multichannel-
	connector	capable speakers.
		On computers with a sound card, use the connector on the card.
5	line-in connector	Use the (blue) line-in connector to attach a record/playback device
		such as a cassette player, CD player, or VCR.
		On computers with a sound card, use the connector on the card.
6	line-out/headphone	Use the (green) line-out connector to attach headphones and most
	connector	speakers with integrated amplifiers.
		On computers with a sound card, use the connector on the card.
7	microphone	Use the (pink) microphone connector to attach a personal
	connector	computer microphone for voice or musical input into a sound or
		telephony program.
		On computers with a sound card, use the connector on the card.
8	center/subwoofer	Use the (orange) center/subwoofer connector to attach a center
	LFE connector	speaker or a single subwoofer.
		On computers with a sound card, use the connector on the card.
		NOTE: The LFE (Low Frequency Effects) Audio channel, found in
		digital surround sound audio schemes, carries only low frequency
		information of 80 Hz and below. The LFE channel drives a
		subwoofer to provide extremely low bass extension. Systems not
		using subwoofers can shunt the LFE information to the main
		speakers in the surround sound setup.
9	side surround	Use the (gray) side surround sound connector to attach
	sound connector	multichannel-capable speakers. The side-surround output provides
		enhanced surround audio for computers with 7.1 speakers.
		On computers with a sound card, use the connector on the card.
10	USB 2.0 connectors	Use the back, rear-quad USB connectors for devices that typically
	(4) (rear quad)	remain connected, such as printers and keyboards.
		NOTE: It is recommended that you use the front USB connectors
		for devices that you connect occasionally, such as joysticks,
		cameras, or bootable USB devices.
11	VGA video	If your monitor has a VGA connector, plug it into the VGA connector
	connector	on the computer.
		NOTE: If your computer has an add-in video card, connect your
		monitor to the add-in card's video connector.
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