Dell 755 manual Removing the Computer Cover

3	network adapter	To attach your computer to a network or broadband device, connect one end of a
	connector	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.
		For VPro to work, the network cable must be connected to the onboard NIC.
		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.
4	network activity light	Flashes a yellow light when the computer is transmitting or receiving network
		data. A high volume of network traffic may make this light appear to be in a steady
		"on" state.
5	line-out connector	Use the green line-out connector (available on computers with integrated sound)
		to attach headphones and most speakers with integrated amplifiers.
6	line-in/microphone	Use the blue and pink line-in/microphone connector (available on computers with
	connector	integrated sound) to attach a record/playback device such as a cassette player, CD
		player, or VCR; or a personal computer microphone for voice or musical input into
		a sound or telephony program.

7USB 2.0 connectors (6) Use the back USB connectors for devices that typically remain connected, such as printers and keyboards.

8	video connector	Plug the cable from your VGA-compatiblemonitor into the blue connector.
		NOTE: If you purchased an optional graphics card, this connector will be covered by
		a cap. Connect your monitor to the connector on the graphics card. Do not remove
		the cap.
		NOTE: If you are using a graphics card that supports dual monitors, use the y-cable
		that came with your computer.
9	serial connector	Connect a serial device, such as a handheld device, to the serial port.
		For more information, see "System Setup Options" on page 281.

Removing the Computer Cover

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.

1Follow the procedures in "Before You Begin" on page 21.

2If you have installed a padlock through the padlock ring on the back panel, remove the padlock.

3Locate the cover release latch shown in the illustration. Then, slide the release latch back as you lift the cover.

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Small Form Factor Computer