Dell OptiPlex 330 (Late 2007) - Manual (Page 31)

Back View
Back Panel Connectors
1 cover
release latch
This latch allows you to open the computer cover.
2 padlock rings Padlock rings are for attaching a commercially available antitheft device.
The padlock rings allow you to secure the computer cover to the chassis
with a padlock to prevent unauthorized access to the inside of the
computer. To use the padlock rings, insert a commercially available padlock
through the rings, and then lock the padlock.
3 power
connector
Insert the power cable.
4 voltage
selector
switch
For selecting voltage rating.
5 back panel
connectors
Plug USB, audio, and other devices into the appropriate connector (see
Back Panel Connectors for more information.
6 card slots Access connectors for any installed PCI and PCI Express cards.
CAUTION: Ensure that none of the system air vents are blocked. Blocking them would cause serious thermal problems.
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 .
2 link integrity light l Green — A good connection exists between a 10-Mbps