A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a desktop computer. Modern personal computers universally use switched-mode …

Dec 2, 2025 · Explore the role of a power supply unit in powering computer components by converting AC into low-voltage DC. Learn about its parts, safety, and buying tips.

Jul 23, 2025 · Power Supply Units (PSUs), despite their name, transform power rather than providing it to systems. In particular, a power supply regulates the DC output voltage to the precise tolerances …

Jun 9, 2023 · PSU stands for Power Supply Unit, and it is the part of a PC responsible for converting the alternating current (AC) power from an electrical outlet into direct current (DC) power that computer...

Jul 28, 2025 · Power supplies come in various form factors to accommodate different PC builds. They also vary in wattage, efficiency ratings (such as 80 PLUS certifications), and modularity, allowing …

In summary, a power supply unit (PSU) is a hardware device that converts AC electricity into DC electricity, regulates the DC output voltage, and distributes the power to all other components of a …

A power supply unit takes the high-voltage AC electricity provided by a mains outlet and transforms it into lower-voltage DC electricity that your computer’s motherboard, processor, graphics card, storage …

A PSU distributes the converted power to various parts of your computer, including the motherboard, CPU, GPU, storage drives, and basically everything else. It ensures that each component gets the …

Oct 15, 2025 · In this guide, we have explained what is a power supply unit, or PSU, along with its types, power connectors, 80 Plus ratings, and more.

Jul 28, 2023 · A power supply unit (PSU) converts AC power from the wall into the right kind of power for the individual parts of your computer.