Dell C521 specifications About Your Computer, Front View

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About Your Computer

Dell™ Dimension™ C521 Service Manual

Front View

Back View of the Computer

Back Panel I/O Connectors

Front View

1	cover release	Use this latch to remove the cover. See Removing the Computer Cover.
	latch
2	Service Tag	Use to identify your computer when you access the Dell Support website
		or call support.
3	FlexBay drive	Can contain an optional floppy drive or optional Media Card Reader.
4	CD or DVD	The drive light is on when the computer reads data from the CD or DVD
	activity light	drive.
5	CD or DVD	Press to eject a disk from the CD or DVD drive.
	eject button
6	microphone	Use the microphone connector to attach a personal computer
	connector	microphone for voice or musical input into a sound or telephony
		program.
7	headphone	Use the headphone connector to attach headphones and most kinds of
	connector	speakers.
8	LAN activity	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	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.
11	power button	Press to turn on the computer.
		NOTICE: To avoid losing data, do not use the power button to
		turn off the computer. Instead, perform an operating system
		shutdown.
12	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.
13	vents	To ensure adequate cooling, do not block any of the vents.