12 Quick Reference Guide
Desktop Computer — Back View
5 power light This light turns on and blinks or remains solid to indicate different operating
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 amber — See "Power Problems" in your online
User’s Guide
.
To exit from a power-saving mode, press the power button or use the keyboard or
the mouse if it is configured as a wake device in the Windows Device Manager. For
more information about sleep modes and exiting from a power-saving mode, see
"Power Management"
in your online
User’s Guide.
See "System Lights" on page 35 for a description of power light patterns that can
help you troubleshoot problems with your computer.
6 diagnostic lights Use these lights to help you troubleshoot a computer problem based on the
diagnostic code. For more information, see "Diagnostic Lights" on page 36.
7 hard-drive activity light This light flickers when the hard drive is in use.
8 headphone connector Use the headphone connector to attach headphones and most kinds of speakers.
9 microphone connector Use the microphone connector to attach a microphone.
10 floppy drive Insert a floppy disk into this drive.
11 CD/DVD drive Insert a CD or DVD (if applicable) into this drive.
5
1
2 3 4 6
1 card slots You can access connectors for any installed PCI and PCI Express cards.
2 back-panel connectors Plug serial, USB, and other devices into the appropriate connector.
3 power connector Insert the power cable into this connector.
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