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PoweredUSB(1) (powered USB) A USB port on a computer that can charge a portable device even when the computer is turned off. See USB power and USB Power Delivery.
|The Yellow USB|
|A yellow USB port is live for charging even when the computer is turned off. However, laptops typically must be plugged into a power outlet.|
(2) (PoweredUSB) A high-power proprietary USB interface from IBM that provides 6 amps at 5, 12 and 24 volts. PoweredUSB was introduced in the late 1990s for peripherals that needed more than the 2.5 watts available from USB 2.0. See USB and USB Power Delivery.
|Sockets on the Host Side|
|The power socket resides above the USB Type A socket, and the plug inserts into both cavities, which are keyed by voltage. The other end of the cable is typically attached permanently to the peripheral device.|
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