Dell Precision 390 - Manual (Page 25)

Front View (Tower Orientation)
Your operating system product key label is located on your
computer.
NOTE: The Operating System CD and the Drivers and Utilities CD are
optional and may not ship with all computers.
NOTE: The color of your CD varies based on the operating system
you ordered.
l How to use Linux
l E-mail discussions with users of Dell Precision™ products and the Linux
operating system
l Additional information regarding Linux and my Dell Precision computer
Dell Supported Linux Sites
l Linux.dell.com
l Lists.us.dell.com/mailman/listinfo/linux-precision
1 upper 5.25-
inch drive bay Holds a CD/DVD drive.
2 lower 5.25-inch
drive bay You can use the bay for an optional CD/DVD drive or a fourth (SATA
only) hard drive.
3 upper 3.5-inch
drive bay You can use the bay for an optional third hard drive (SATA or SAS),
floppy drive or Media Card Reader.
4 lower 3.5-inch
drive bay You can use the bay for an optional floppy drive or Media Card Reader.
5 hard-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.
6 IEEE 1394
connector
(optional) Use the optional IEEE 1394 connectors for high-speed data devices
such as digital video cameras and external storage devices.
7 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 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.
8 Dell™ rotatable
badge To rotate the Dell badge for tower-to-desktop conversion; remove the
front panel (see
Removing the Front Panel ), turn it over, and rotate the