Removing and Installing Parts 49
Front and Back View of the Computer

Front View

1
2
9
3
4
8
6 5
10
7
1CD or DVD drive-
activity light
The drive activity light is on when the computer reads data from the CD or DVD
drive.
2CD or DVD drive eject
button
Press to eject a disc from the CD or DVD drive.
3floppy-drive eject button Press to eject a floppy disk from the floppy drive.
(On computers with an optional floppy drive.)
4hard-drive activity light The 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 your CD player is operating.
5headphone connector Use the headphone connector to attach headphones and most kinds of speakers.
6USB 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" on page82
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.
7power 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.