About your computer, Front view – Dell Dimension C521 User Manual
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About Your Computer
Dell™ Dimension™ C521 Service Manual
Front View
1
cover release
latch
Use this latch to remove the cover. See
Removing the Computer Cover
.
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
activity light
The drive light is on when the computer reads data from the CD or DVD
drive.
5
CD or DVD
eject button
Press to eject a disk from the CD or DVD drive.
6
microphone
connector
Use the microphone connector to attach a personal computer
microphone for voice or musical input into a sound or telephony
program.
7
headphone
connector
Use the headphone connector to attach headphones and most kinds of
speakers.
8
LAN activity
light
This light indicates that a LAN (Local Area Network) connection is
established.
9
diagnostic
lights (4)
Use the lights to help you troubleshoot a computer problem based on
the diagnostic code. For more information, see
Diagnostic Lights
.
10 USB 2.0
connectors (2)
Use the front USB connectors for devices that you connect occasionally,
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
activity light
The hard drive activity light is on when the computer reads data from or
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.