Dell OptiPlex GX520 - Manual (Page 19)

Quick Reference Guide
19
3 Disconnect your computer and all attached devices from their electrical outlets, and then
press the power button to ground the system board.
4 Remove the computer stand, if it is attached.
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet
before removing the cover.
NOTICE:
Before touching anything inside your computer, ground yourself by touching an unpainted
metal surface, such as the metal at the back of the computer. While you work, periodically touch an
unpainted metal surface to dissipate any static electricity that could harm internal components.
Mini Tower Computer
NOTICE:
Before touching anything inside your computer, ground yourself by touching an unpainted
metal surface. While you work, periodically touch an unpainted metal surface to dissipate any static
electricity that could harm internal components.
1 Follow the procedures in "Before You Begin" on page 18.
2 If you have installed a padlock through the padlock ring on the back panel, remove the
padlock.
3 Lay the computer on its side as shown in the following illustration.