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  1. Power supply unit (computer) - Wikipedia

    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 …

  2. Amazon.com: Computer Power Supplies - Computer Power Supplies ...

    Shop a wide selection of Power Supplies at Amazon.com. Free shipping and free returns on eligible items.

  3. What is Power Supply Unit (PSU)? - GeeksforGeeks

    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 …

  4. What Is a Power Supply? - Computer Hope

    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.

  5. What Is a PSU? What is an ATX Power Supply? - Lifewire

    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.

  6. What is a PSU (Power Supply Unit)? Explained! - Beebom

    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.

  7. Anatomy of a Power Supply Unit (PSU) - TechSpot

    Sep 4, 2025 · Power supplies may not break headlines like other components, but they're seriously cool pieces of engineering. Let's open the humble PSU and explore the parts that keep...

  8. What is the Function of the Power Supply Unit - Digital Citizen

    Nov 18, 2025 · A power supply unit keeps every component in your PC running with clean, stable power. It converts the electricity from your wall outlet into voltages that each part can use. A solid …

  9. Understanding Power Supplies: The Heart of Every Computer

    Sep 11, 2025 · A power supply unit (PSU) is a critical component of every computer system, serving as the conduit that transforms electrical energy from an outlet into usable power for various hardware …

  10. What Is a Power Supply Unit (PSU)? Your Ultimate Guide

    Nov 14, 2025 · At its core, a Power Supply Unit (PSU) is an internal hardware component that converts the alternating current (AC) from your wall outlet into a steady flow of direct current (DC) that your …