Atx Psu Pinout
Most of todays motherboards supply their cpu with a separate 12 volt cable which has 4 pins for atx style sometimes called p4 or 8 or more pins for eps and non standard high power systems.
Atx psu pinout. The atx 6 pin power supply connector is a motherboard power connector used to provide 12 vdc to the processor voltage regulator but the 4 pin variety is the more commonly used connector. The wires on the main 20 pin or 24 pin connectors are color coded. If using an atx psu for purposes other than powering an atx motherboard power can be fully turned on it is always partly on to operate wake up devices by shorting the power on pin on the atx connector pin 16 green wire to a black wire ground which is what the power button on an atx system does. Power supply unit psu basics including atx power supply pinouts in this section we discuss what a power supply is and what it does.
Some psus may have three or four 12 volt 4 pin connectors. Pin 9 standby supply 5v even when psu is turned off. Pin 14 goes from 0 to 37 when psu switch is turned on. Are u using a.
Ground wires are black. In several power supply units pin 12 may be brown not blue pin 18 may be blue not white and pin 8 may be white not gray. In addition some psu violate color coding of wires. It was designed to work that way.
These are the same for all atx power supplies. 12v wires are yellow. The green wire is the power on sensor. 5v wires are red.
Maybe in some cases you want to test an old cd rom drive or something else. All that you have is a psu from an old pc an a wire. We summarise the various voltages produced and cover the different types of connectors used to connect to the systems devices. You can see an example in the picture above.
If you have an atx power supply with a 24 pin main cable its okay to plug it into a motherboard with a 20 pin connector. 5v wires if they are present are white. Or do a google your power suppy followed by 24 pin pinout. Reply 1 year ago reply upvote.
Atx 6 pin power connector pinout table atx v22 this small connector usually attaches to the motherboard near the cpu. 33v wires are orange. Hp compaq sff small atx power supply identical to atx pinout but use smaller connector and psu form factor is incompatible.
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