3Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.

4Remove 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.

1Follow the procedures in "Before You Begin" on page 18.

2If you have installed a padlock through the padlock ring on the back panel, remove the padlock.

3Lay the computer on its side as shown in the following illustration.

Quick Reference Guide

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Image 19
Dell GX520 manual Mini Tower Computer