Quick Reference Guide 19
About Your Computer

Front View (Tower Orientation)

1upper 5.25-inch drive bay Holds a CD/DVD drive.
2lower 5.25-inch drive bay You can use this bay for an optional CD/DVD drive.
3FlexBay You can use this bay for an optional third hard drive (SATA or SAS), a floppy
drive or Media Card Reader.
4hard-drive activity light The hard drive 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.
5IEEE 1394 connector
(optional)
Use the optional IEEE 1394 connector for high-speed data devices such as
digital video cameras and external storage devices.
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