What is a Power Supply Unit (PSU)?

A Power Supply Unit (PSU) is an internal IT hardware component. Despite the name, Power Supply Units (PSU) do not supply systems with power - instead they convert it.
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Anatomy of a Power Supply Unit (PSU)

Universal PSU – 63 Watt Switching Power Supply

PC Power Supplies

Power supply unit (computer) - Wikipedia

What is a Power Supply Unit (PSU)?

1000w Power Supply For Pc Support Dual Cpu 110v 220v Power Supply Unit Psu For Computer Source Power Mining - Pc Power Supplies - AliExpress

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LET Power Supply Unit (L-PSU) - Tellabs

Power: 500W. Cooling: 12cm Fan. Cooling System - 120mm sleeve bearing fan. Floppy Drive Connectors: 1. Safety: CE / FCC / UL / TUV. Power Good Signal

System Builder 500W PSU ATX Power Supply Unit 12cm Silent Fan for PC Computer

Computer Power Supply Unit (PSU) Basics and Tests

How to Find a Reliable Power Supply (PSU)

PSUs (Power Supply Units) - PSU - Tech Explained

What Is a PSU? What is an ATX Power Supply?

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OI LC-8460BTX 450W POWER SUPPLY UNIT / PSU