22 Quick Reference GuideUltra-Small Form Factor Computer — Side View4 power light The power light illuminates and blinks or remains solid to indicate different states:• No light — The computer is turned off.• Steady green — The computer is in a normal operating state.• Blinking green — The computer is in a power-saving mode.• Blinking or solid yellow — See your online User’s Guide.To exit from a power-saving mode, press the power button or use the keyboard orthe mouse if it is configured as a wake device in the Windows Device Manager. Formore information about sleep modes and exiting from a power-saving mode, seeyour online User’s Guide.See "System Lights" on page 49 for a description of light codes that can help youtroubleshoot problems with your computer.5 power button Press this button to turn on the computer.NOTICE: To avoid losing data, do not turn off the computer by pressing thepower button. Instead, perform an operating system shutdown. See "Before YouBegin" on page 25 for more information.6 vents The vents help prevent your computer from overheating. To ensure properventilation, do not block these cooling vents.7 module bay Install a D-module optical drive, second hard drive, or floppy drive in the modulebay.8 hard-drive access light The hard-drive access light is on when the computer reads data from or writes datato the hard drive. The light might also be on when devices such as your CD playerare operating.9 vents The vents help prevent your computer from overheating. To ensure properventilation, do not block these cooling vents.1 vents The vents located on each side of the computer help prevent your computer fromoverheating. To ensure proper ventilation, do not block these cooling vents.1
