Dell E521 Owner's Manual - Page 12

Using a Media Card Reader Optional on NOTICE - hard drive

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5 FlexBay drive 6 microphone connector 7 headphone connector 8 diagnostic lights (4) 9 hard-drive activity light 10 power button, power light 11 USB 2.0 connectors (2) 12 vents 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)" on page 22. Use the microphone connector to attach a personal computer 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. Use the headphone connector to attach headphones and most kinds of speakers. Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights" on page 49. 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. Press the power button to turn on the computer. The light in the center of this button indicates power state. See "Controls and Lights" on page 109 for more information. NOTICE: To avoid losing data, do not use the power button to turn off the computer. Instead, perform an operating system shutdown. 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" on page 112 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. For adequate cooling, do not block any of the vents. NOTICE: Ensure that there is a minimum of two inches of space between all vents and any object near these vents. NOTICE: Keep the vent area clean and dust-free to ensure that the computer is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the computer. 12 Setting Up and Using Your Computer

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12
Setting Up and Using Your Computer
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)" on page 22.
6
microphone connector
Use the microphone connector to attach a personal computer
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 connector
Use the headphone connector to attach headphones and most
kinds of speakers.
8
diagnostic lights (4)
Use the lights to help you troubleshoot a computer problem
based on the diagnostic code. For more information, see
"Diagnostic Lights" on page 49.
9
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.
10
power button,
power light
Press the power button to turn on the computer. The light in
the center of this button indicates power state. See "Controls
and Lights" on page 109 for more information.
NOTICE:
To avoid losing data, do not use the power button
to turn off the computer. Instead, perform an operating
system shutdown.
11
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" on page 112 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.
12
vents
For adequate cooling, do not block any of the vents.
NOTICE:
Ensure that there is a minimum of two inches of
space between all vents and any object near these vents.
NOTICE:
Keep the vent area clean and dust-free to ensure
that the computer is adequately ventilated. Use only a dry
cloth to clean the vent area to avoid water damage to the
computer.