Back View; Back Panel Connectors - Dell OptiPlex 755 User Manual

8 headphone Use the headphone connector to attach headphones and most kinds of
connector speakers.
9 microphone Use the microphone connector to attach a microphone.
connector
10 3.5-inch drive Can contain an optional floppy drive, second hard drive, or optional
bay media card reader.
11 5.25-inch Can contain an optical drive. Insert a CD or DVD (if supported) into this
drive bay drive.

Back View

1 card slots Access connectors for any installed PCI or PCI Express cards, PS/2
connector, eSATA connector, etc.
NOTE: The back view of the computer is different if a riser is installed.
2 back panel Plug serial, USB, and other devices into the appropriate connectors (see
connectors Back Panel Connectors).
3 power Insert the power cable.
connector
4 voltage Your computer is equipped with a manual voltage selection switch. To
selection help avoid damaging a computer with a manual voltage selection switch,
switch set the switch for the voltage that most closely matches the AC power
available in your location.
NOTICE: In Japan, the voltage selection switch must be set to the 115-V
position.
Also, ensure that your monitor and attached devices are electrically rated
to operate with the AC power available in your location.
5 padlock ring Insert a padlock to lock the computer cover.
6 cover-release Allows you to open the computer cover.
latch

Back Panel Connectors

1 parallel Connect a parallel device, such as a printer, to the parallel connector. If
connector you have a USB printer, plug it into a USB connector.
NOTE: The integrated parallel connector is automatically disabled if the
computer detects an installed card containing a parallel connector
configured to the same address. For more information, see
Setup Options.
2 link integrity Green — A good connection exists between a 10-Mbps network
l
light and the computer.
Orange — A good connection exists between a 100-Mbps
l
System