Инструкция по эксплуатации Dell OptiPlex 745 — страница 8

Quick Reference Guide

5.25-inch drive bay

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

5.25-inch drive bay

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

3.5-inch drive bay

Can contain an optional floppy drive or optional media card reader.

USB 2.0 connectors (2)

Use the front USB connectors for devices that you connect occasionally such as joysticks or cameras or for bootable USB devices (see your online User’s Guide for more information on booting to a USB device).

It is recommended that you use the back USB connectors for devices that typically remain connected such as printers and keyboards.

LAN indicator light

This light indicates that a LAN (local area network) connection is established.

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.

power button

Press this button to turn on the computer.

NOTICE:

To avoid losing data do not turn off the computer by pressing the power button Instead perform an operating system shutdown See "Before You Begin" on page 25 for more information.

NOTICE:

If your operating system has ACPI enabled when you press the power button the computer will perform an operating system shutdown.

power light

The power light illuminates and blinks or remains solid to indicate different operating modes:

• 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.

hard-drive activity light

This light flickers when the hard drive is being accessed.

headphone connector

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

microphone connector

Use the microphone connector to attach a microphone.