When Using the Computer System

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

If your computer has a voltage selection switch on the power supply, be sure the switch is set to match the alternating current (AC) power available 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

Be sure the monitor and attached peripherals are electrically rated to operate with the AC power avail- able in your location.

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 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 the 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 the computer system’s cables and that the cables are not located where they can be stepped on or tripped over.

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

Keep the computer away from radiators and heat sources. Also, do not block cooling vents. Avoid placing loose papers underneath the computer, and do not place the computer in a closed-in wall unit or on a rug.

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Dell 4200 manual When Using the Computer System