Dell Precision T5400 (Late 2007) - Manual (Page 23)

Quick Reference Guide 23
Front View (Desktop Orientation)
1 upper 5.25-inch
drive bay Holds an Optical Drive.
2 lower 5.25-inch
drive bay You can use the bay for an optional Optical Drive or a SATA
hard drive.
3 FlexBay You can use the bay for a floppy drive or a Media Card Reader.
4 IEEE 1394
connector
(optional) Use the optional IEEE 1394 connector for high-speed data devices
such as digital video cameras and external storage devices.
5 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. (For more information on booting to
a USB device, see "System Setup" in your User’s Guide.)
Dell recommends that you use the back USB connectors for
devices that typically remain connected, such as printers and
keyboards.
6 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.
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