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20 About Your Computer
5 IEEE 1394 connector
(optional)
Use the optional IEEE 1394 connector for high-speed
data devices such as digital video cameras and external
storage devices.
6 USB 2.0 connectors (2) Use the front USB connectors for devices that you
connect occasionally, such as flash memory keys or
cameras, or for bootable USB devices (see "System
Setup" on page 89 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.
7 Dell™ rotatable badge To rotate the Dell badge for tower-to-desktop
conversion: remove the
front panel (see
"Removing the
Computer Cover" on page 153
)
, turn it over, and rotate the
plastic handle behind the badge.
8 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 40 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.
9 headphone connector Use the headphone connector to attach headphones.
10 microphone connector Use the microphone connector to attach a personal
computer microphone for voice or musical input into a
sound or telephony program.
11 network link light The network link light is on when a good connection
exists between a 10-Mbps, 100-Mbps, or 1000-Mbps (or
1-Gbps) network and the computer.
12 diagnostic lights (4) Use these lights to help you troubleshoot a computer
problem based on the diagnostic code. For more
information, see "Diagnostic Lights" on page 121.