Dell OptiPlex 755 User Manual
Page 20
20
Quick Reference Guide
Back Panel Connectors
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.
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.
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" on page 20.
6
card slots (4)
Access connectors for any installed PCI or PCI Express cards,
PS/2 connector, eSATA connector, etc.
1
parallel connector Connect a parallel device, such as a printer, to the parallel
connector. If 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 "System Setup Options" in the User’s Guide.
1
3
9
8
7
5
6
2
4