Dell OptiPlex 745 - Manual (Page 14)

14
Quick Reference Guide
Desktop Computer — Back View
5 power light The power light illuminates 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 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
your online User’s Guide.
See "System Lights" on page 49 for a description of light codes that can help you
troubleshoot problems with your computer.
6 diagnostic lights Use the lights to help you troubleshoot a computer problem based on the
diagnostic code. For more information, see "Diagnostic Lights" on page 50.
7 hard-drive activity light This light flickers when the hard drive is being accessed.
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 3.5-inch drive bay Can contain an optional floppy drive or optional Media Card Reader.
11 5.25-inch drive bay Can contain an optical drive. Insert a CD or DVD (if supported) into this drive.
5 1 2 3 4 6