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Before you connect the computer to a power source, ensure that the voltage rating of the AC adapter matches that of the available power source:

115 V/60 Hz in most of North and South America and some Far Eastern countries such as South Korea and Taiwan

100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan

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

To help prevent electric shock, plug the AC adapter and external device power cables into properly grounded power sources. These cables are equipped with 3-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 3-wire cable with properly grounded plugs.

If you use an extension cable with your AC adapter, ensure that the total ampere rating of the products plugged in to the extension cable does not exceed the ampere rating of the extension cable.

To remove power from the computer, turn it off, remove the battery, and disconnect the AC adapter from the electrical outlet.

If your computer includes an integrated or optional (PC Card) modem, disconnect the modem cable during an electrical storm to avoid the remote risk of electric shock from lightning via the telephone line.

To help avoid the potential hazard of electric shock, do not connect or disconnect any cables or perform maintenance or reconfiguration of this product during an electrical storm.

PC Cards may become very warm during normal operation. Use care when removing PC Cards after their continuous operation.

Do not dispose of batteries in a fire. They may explode. Check with local authorities for disposal instructions.

When setting up the computer for work, place it on a level surface.

When traveling, do not check the computer as baggage. You can put your computer through an X-ray security machine, but never put your computer through a metal detector. If you have the computer checked by hand, be sure to have a charged battery available in case you are asked to turn on the computer.

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Safety Instr uctions

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Dell 4000 manual Safety Instr uctions