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An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
On laptops, charging devices from the USB port when it is not being powered from AC drains the laptop battery; most laptops have a facility to stop charging if their own battery charge level gets too low. [83] On Dell, HP and Toshiba laptops, sleep-and-charge USB ports are marked with the standard USB symbol with an added lightning bolt or ...
M17x (discontinued) – Introduced in 2009, it is the first laptop released by Alienware after the company was bought by Dell. The name and some of the design is based on the Alienware 17-inch laptop, the Alienware M17. M17x-R2 (discontinued) – 2010 revision of the M17x, adding support for Intel i5 and i7 processors, dual MXM 3.0B graphic cards.
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A battery recall in August 2006, as a result of a Dell laptop catching fire, caused much negative attention for the company though later, Sony was found responsible for the manufacturing of the batteries, however a Sony spokesman said the problem concerned the combination of the battery with a charger, which was specific to Dell. [46]
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The computer makes use of this to retrieve information about the power adapter and to change the color of the LEDs on the power adapter's connector. The Apple MagSafe power adapter's 1-Wire communication chip is located inside the MagSafe connector itself; the cable does not carry the data line to the power adapter enclosure.
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