Desktop computer - back view, Desktop computer — back view – Dell OptiPlex 745 User Manual

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Quick Reference Guide

Desktop Computer — Back View

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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.

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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.

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hard-drive activity light

This light flickers when the hard drive is being accessed.

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headphone connector

Use the headphone connector to attach headphones and most kinds of speakers.

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microphone connector

Use the microphone connector to attach a microphone.

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3.5-inch drive bay

Can contain an optional floppy drive or optional Media Card Reader.

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5.25-inch drive bay

Can contain an optical drive. Insert a CD or DVD (if supported) into this drive.

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