Back to Contents PageControls and LightsDell™ Dimension™ 4500Front ViewBack ViewFront ViewCD Activity LightThe CD activity light is on when the computer reads data from the CD drive.CD Drive Eject ButtonPress this button to eject your CD from the CD drive.Floppy Drive Eject ButtonPress this button to eject a disk from the floppy drive.Hard-Drive LightThe hard-drive light is on when the computer reads data from or writes data to your hard drive.Power ButtonPress the power button to turn on the computer.Floppy Drive LightThe floppy drive light is on when the computer reads data from or writes data to the floppy drive.CD Headphone ConnectorUse the CD headphone connector to attach headphones to the CD drive.CD Volume Control DialMove the dial to adjust the volume of your audio CD.NOTICE: To turn off your computer, perform a Windows® shutdown instead of pressing the power button. Otherwise, you may lose data.HINT: To prevent damage to your computer, the front door is designed to "break away" if it is lifted up too far. For instructions on how to reattach thedoor, see "Reattaching the Front Door and Hinge Arms."