Dell Optiflex 740 User Manual page 205

Blinking or solid amber — See
l
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
See System Lights
troubleshoot problems with your computer.
8 hard-drive This light flickers when the hard drive is being accessed.
activity light
9 headphone Use the headphone connector to attach headphones and most kinds of
connector speakers.
10 microphone Use the microphone connector to attach a microphone.
connector
Back View
1 cover release This latch allows you to open the computer cover.
latch
2 padlock ring Insert a padlock to lock the computer cover.
3 voltage Your computer is equipped with a manual voltage-selection switch.
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.
NOTICE:
the 115-V position even though the AC power available in Japan
is 100 V.
Also, ensure that your monitor and attached devices are electrically
rated to operate with the AC power available in your location.
4 power Insert the power cable.
connector
5 back-panel Plug serial, USB, and other devices into the appropriate connectors. See
connectors Back-Panel Connectors.
6 card slots Access connectors for any installed PCI and PCI Express cards.
Back-Panel Connectors
Power Problems.
Power Management.
for a description of light codes that can help you
In Japan, the voltage selection switch must be set to