Dell E521 specifications About Your Computer, Front View of the Computer

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About Your Computer

Dell™ Dimension™ E521 Service Manual

Front View of the Computer

Back View of the Computer

Back Panel Connectors

Front View of the Computer

1	cover latch	Use this latch to remove the cover. See Removing the Computer Cover.
	release
2	location of	Use the Service Tag to identify your computer when you access the Dell
	Service Tag	Support website or call technical support.
3	CD or DVD	Press to eject a disk from the CD or DVD drive.
	eject button
4	CD or DVD	The drive light is on when the computer reads data from the CD or DVD
	activity light	drive.
5	FlexBay drive	Can contain an optional floppy drive or optional Media Card Reader. For
		information on using the Media Card Reader, see "Using a Media Card
		Reader (Optional) in your Owner's Manual.
6	microphone	Use the microphone connector to attach a personal computer
	connector	microphone for voice or musical input into a sound or telephony
		program.
		On computers with a sound card, the microphone connector is on the
		card.
7	headphone	Use the headphone connector to attach headphones and most kinds of
	connector	speakers.
8	LAN indicator	This light indicates that a LAN (local area network) connection is
	light	established.
9	diagnostic	Use the lights to help you troubleshoot a computer problem based on
	lights (4)	the diagnostic code. For more information, see Diagnostic Lights.
10	hard-drive	The hard-drive activity light is on when the computer reads data from or
	activity light	writes data to the hard drive. The light might also be on when a device
		such as a CD player is operating.
11	power button,	Press the power button to turn on the computer. The light in the center
	power light	of this button indicates power state.
		NOTICE: To avoid losing data, do not use the power button to turn off
		the computer. Instead, perform an operating system shutdown.
12	USB 2.0	Use the front USB connectors for devices that you connect occasionally,
	connectors (2)	such as joysticks or cameras, or for bootable USB devices (see System
		Setup Options for more information on booting to a USB device).
		It is recommended that you use the back USB connectors for devices
		that typically remain connected, such as printers and keyboards.
13	vents	For adequate cooling, do not block any of the vents.