About Your Computer; Front View - Dell Dimension C521 Service Manual

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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
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
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
Setup Options
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:
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.
Removing the Computer
Diagnostic
for more information on booting to a USB device.
To avoid losing data, do not use the power button to
Cover.
Lights.
System