PSU
n.n. Stands for Power Supply Unit. The part of a computer or electronic device that takes electricity from the wall and changes it into the right type of power for the machine.
n. Abbreviation for Power Supply Unit. A hardware component that converts mains alternating current (AC) into low-voltage regulated direct current (DC) power for the internal components of a computer or electronic system.
The computer won't turn on because the PSU is broken.
When building a high-end gaming PC, you must ensure the PSU has enough wattage to support the graphics card and processor.
A high-quality PSU not only provides stable voltage to sensitive components but also includes protections against power surges and short circuits that could otherwise lead to catastrophic hardware failure.
Typically used in technical or enthusiast contexts regarding computer hardware and electronics.
Last updated July 22, 2026