Dell OptiPlex 330 (Late 2007) - Manual (Page 30)

30
Quick Reference Guide
Back View
CAUTION:
Ensure that none of the system air vents are blocked. Blocking them
would cause serious thermal problems.
1 card slots Access connectors for any installed PCI and PCI Express cards.
2 back panel
connectors Plug USB, audio, and other devices into the appropriate
connector (see "Back Panel Connectors" on page 31 for
more information).
3 power connector Insert the power cable.
4 voltage selector
switch For selecting voltage rating.
5 padlock rings Padlock rings are for attaching a commercially available
antitheft device. The padlock rings allows 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.
6 cover release latch Use this latch to open the computer cover.
5 1 2 3 4 6