If any of the following conditions occur, unplug the product from the electrical outlet and replace the part or contact your trained service provider:

The power cable, extension cable, or plug is damaged.

An object has fallen into the product.

The product has been exposed to water.

The product has been dropped or damaged.

The product does not operate correctly when you follow the operating instructions.

Keep your system away from radiators and heat sources. Also, do not block cooling vents.

Do not spill food or liquids on your system components, and never operate the product in a wet environment. If the system gets wet, see the appropriate section in your troubleshooting guide or contact your trained service provider.

Use the product only with approved equipment.

Allow the product to cool before removing covers or touching internal components.

Operate the product only from the type of external power source indicated on the electrical ratings label. If you are not sure of the type of power source required, consult your service provider or local power company.

NOTICE: To help avoid damaging your system, be sure the voltage selection switch (if provided) on the power supply is set for the voltage that most closely matches the AC power available in your location. Also be sure that your monitor and attached devices are electrically rated to operate.

Be sure that your monitor and attached devices are electrically rated to operate with the power available in your location.

Use only power cables provided with this product.

To help prevent electric shock, plug the system and peripheral power cables into properly grounded electrical outlets. 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.

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Dell 2321DS manual