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8se the following safety guidelines to help protect your computer system from poten- tial damage and to ensure your own personal safety.

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As you use your computer system, observe the following safety guidelines:

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The system has an auto-sensing power supply that will match the AC power avail- able at your location:

—115 volts (V)/60 hertz (Hz) in most of North and South America and some Far Eastern countries such as Japan, South Korea, and Taiwan

—230 V/50 Hz in most of Europe, the Middle East, and the Far East

Also be sure your monitor and attached peripherals are electrically rated to oper- ate with the AC power available in your location.

To help avoid possible damage to the system board, wait 10 to 20 seconds after disconnecting the system from AC power (until the standby light-emitting diode [LED] on the system board goes out) before removing a component from the sys- tem board or disconnecting a peripheral device from the computer.

To help prevent electric shock, plug the computer and peripheral power cables into properly grounded power sources. These cables are equipped with three-prong plugs to help ensure proper grounding. Do not use adapter plugs or remove the grounding prong from a cable. If you must use an extension cable, use a three-wire cable with properly grounded plugs.

To help protect your computer system from sudden, transient increases and decreases in electrical power, use a surge suppressor, line conditioner, or un- interruptible power supply (UPS).

Be sure nothing rests on your computer system’s cables and that the cables are not located where they can be stepped on or tripped over.

Do not spill food or liquids on your computer. If the computer gets wet, consult your Diagnostics and Troubleshooting Guide.

Do not push any objects into the openings of your computer. Doing so can cause fire or electric shock by shorting out interior components.

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