24 Quick Reference GuideFront View (Desktop Orientation)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 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 digitalvideo cameras and external storage devices.5 USB 2.0 connectors (2) Use the front USB connectors for devices that you connect occasionally, such asflash memory keys or cameras, or for bootable USB devices (see "System Setup" inyour User’s Guide for more information on booting to a USB device).It is recommended that you use the back USB connectors for devices thattypically 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 tothe hard drive. The light might also be on when a device such as your CD playeris operating.7 Dell™ rotatable badge To rotate the Dell badge for tower-to-desktop conversion; remove the front panel,turn it over, and rotate the plastic handle behind the badge.8 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.NOTE: The power button can also be used to wake the system or to place it into apower-saving state. See yourUser’s Guide for more information.1 2 3 5 6 789101112134book.book Page 24 Tuesday, January 10, 2006 2:58 PM