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Back view, Back-panel connectors – Dell OptiPlex 740 User Manual

Page 205

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Back View

 

Back-Panel Connectors

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Blinking or solid amber — See

Power Problems

.

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

.

See

System Lights

for a description of light codes that can help you

troubleshoot problems with your computer.

8

hard-drive
activity light

This light flickers when the hard drive is being accessed.

9

headphone
connector

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

10 microphone

connector

Use the microphone connector to attach a microphone.

1 cover release

latch

This latch allows you to open the computer cover.

2 padlock ring

Insert a padlock to lock the computer cover.

3 voltage

selection
switch

Your computer is equipped with a manual voltage-selection switch.

To help avoid damaging a computer with a manual voltage selection
switch, set the switch for the voltage that most closely matches the AC
power available in your location.

Also, ensure that your monitor and attached devices are electrically
rated to operate with the AC power available in your location.

NOTICE:

In Japan, the voltage selection switch must be set to

the 115-V position even though the AC power available in Japan
is 100 V.

4 power

connector

Insert the power cable.

5 back-panel

connectors

Plug serial, USB, and other devices into the appropriate connectors. See

Back-Panel Connectors

.

6 card slots

Access connectors for any installed PCI and PCI Express cards.