Dell Precision T5400 Quick Reference Guide - Page 23

Front View (Desktop Orientation) 1 2 3 45 6 7 12 11 10 9 8 1 upper 5.25-inch drive bay 2 lower 5.25-inch drive bay 3 FlexBay 4 IEEE 1394 connector (optional) 5 USB 2.0 connectors (2) 6 hard-drive activity light Holds an Optical Drive. You can use the bay for an optional Optical Drive or a SATA hard drive. You can use the bay for a floppy drive or a Media Card Reader. Use the optional IEEE 1394 connector for high-speed data devices such as digital video cameras and external storage devices. 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. 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. Quick Reference Guide 23