Dell OptiPlex 755 Quick Reference Manual page 15

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To guard against electrical shock, always unplug your computer from

the electrical outlet before removing the cover.

6 Remove the computer cover.

For a mini tower computer, see "Removing the Computer Cover" on

For a desktop computer, see "Removing the Computer Cover" on

For a small form factor computer, see "Removing the Computer

Cover" on page 43.

For an ultra small form factor computer, see "Removing the Computer

Cover" on page 55.

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.

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