Dell OptiPlex GX520 User Manual
Page 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.
If applicable, remove the computer stand (for instructions, see the documentation that came with the stand) and the cable cover, if attached.
5.
Remove the computer cover:
l
Remove the
mini tower computer cover
.
l
Remove the
desktop computer cover
.
l
Remove the
small form factor computer cover
.
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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.