power adapter - Computer Definition
A power supply for just about every electronic device on the market. Also called an "AC adapter" or a "charger" if used to recharge a battery, it plugs into the wall and converts AC current to a single DC voltage in most cases. There are also adapters that output a different AC voltage. Laptops have both an external power adapter, also called a "power brick," and an internal power supply. If an external power adapter is not used with an electronic product such as a desktop computer, the DC current is created in a power supply inside the unit. See transformer, power supply, power distribution unit, power strip and USB charger.
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