Dell Precision 490 User Manual

Page 34

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CAUTION:

To guard against electrical shock, always unplug your computer from the electrical outlet before opening 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 static electricity, which could harm internal components.