The Power Supply Unit, or PSU, is a component of your computer that provides electricity to the rest of the components in your computer. This term was viewed 10,470 times.

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...

like those used in any modern computer is that they’re more efficient at higher AC input voltages. Power supply efficiency at different input voltages. (Credit: HP) This can be seen clearly when ...