14 Setting Up and Using Your Computer
3 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 24.
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 diagnostic lights (4) Use the lights to help you troubleshoot a computer problem 
based on the diagnostic code. For more information, see "Power 
Light and Diagnostic Lights" on page 47.
9 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 98 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.
10 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.
11 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.
12 vents To ensure 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 system is adequately ventilated. Use only a dry 
cloth to clean the vent area to avoid water damage to the 
system.