For the operation basics of smps psu see our power supply tutorial.
Atx power supply connectors.
20 pin molex 39 29 9202 at the motherboard.
The original atx systems had 20 pin main connector p1.
Atx 24 pin 12v power connector pinout atx v2 2.
An atx power supply provides a number of peripheral power connectors and in modern systems two connectors for the motherboard.
Atx and pci e power supply connector socket guide atx and pci e sockets can be a bit of a mine field there are various sizes and some thateven look the same from a distance but have subtle differences pci e 6 2 and atx 8 4 4 i m looking at you.
An 8 pin or 4 4 pin auxiliary connector providing additional power to the cpu and a main 24 pin power supply connector an extension of the original 20 pin version.
Silverstone technology 350 watt flex atx power supply with fixed cables and 80 plus gold with 6pin pcie connector sst fx350 g usa 4 1 out of 5 stars26 83 74 83 74 get it as soon as wed sep 16.
The connector itself is a molex 39 01 2240 connector often called a molex mini fit jr.
20 pin molex 39 01 2200 at the cable.