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Power cord Updated: 04/26/2017 by Computer Hope Alternatively referred to as a power cable, mains cable or flex, a power cord is the primary cable that provides power to the computer, printer, monitor, and components within a computer. In the image to the right, is an example of the power cord that is commonly used with computers, monitors, printers, and other peripherals. Tip: When dealing with a laptop, the power cord is more properly referred to as an AC adapter. Related pages. No power or computer does not turn on.
Power Supply. A power supply is a hardware component that supplies power to an electrical device. It receives power from an electrical outlet and converts the current from AC (alternating current) to DC (direct current), which is what the computer requires.It also regulates the voltage to an adequate amount, which allows the computer to run smoothly without overheating.t receives power from an electrical outlet and converts the current from AC (alternating current) to DC (direct current), which is what the computer requires. It also regulates the voltage to an adequate amount, which allows the computer to run smoothly without overheating.