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Power supplies refer to the components responsible for providing electrical power to electronic devices, ensuring their proper functioning and optimal performance. In the realm of electronics, computers, desktop computers, laptop computers, they serve as the vital link between the main power source and the intricate circuitry within these devices. Power supplies convert alternating current (AC) from the wall outlet into direct current (DC) that electronic components require to operate. They also regulate voltage levels, preventing power surges or drops that could potentially damage sensitive electronic equipment. Moreover, they often include protective measures such as short-circuit prevention and overvoltage protection, ensuring safety and longevity of the devices they supply power to. Thus, power supplies are an indispensable element in the smooth operation and reliability of various electronic devices, including computers and their numerous iterations.