Pinouts for ATX-compliant computer power supply: 20 and 24-pin main connectors, 12V, SATA, PCI, floppy drive and other. Provides diagrams, wire colors and part numbers.

Your guide to computer power supply: connector pinouts, form factors, SMPS ATX schematic diagrams, theory of operation, reviews, wiring, PC repair guides and other info and resources for buyers and DIY projects.

This tutorial is designed to help you better understand the operation of an SMPS. The diagram below shows a partial schematic of a 450 watt ATX power supply. Its construction is typical for a modern computer PSU with MOSFET switches and active power factor correction (PFC).

PSU Schematic Diagram, circuit diagram, Service manual. Wiring for ATX power supply connectors (ATX12V) with ratings and color coding of wires:

A typical computer power supply wiring diagram consists of various cables and connectors that are essential for powering the motherboard, hard drives, graphics card, and other peripherals. The main components of a power supply include a transformer, …

Motherboards can come with either a 20 pin main power connector or a 24 pin main power connector. Many power supplies come with a 20+4 cable which is compatible with both 20 and 24 pin motherboards. A 20+4 power cable has two pieces: a 20 pin piece, and a 4 pin piece.

The PC power supply pinout diagram is a visual representation of the different pins and connectors present on a computer power supply unit (PSU). It provides detailed information about the wiring and connections that are required for proper functioning of the power supply in a PC.