20 Pin Atx Power Connector Motherboard
Atx12v compliant power supplies although they have 24 pins can actually be used on an atx motherboard that has a 20 pin connector.
20 pin atx power connector motherboard. 20 pin molex 39 29 9202 at the motherboard. Thankfully almost all 24 pin power connectors are designed so that four of the pins can be detached or moved out of the way. The original 20 pin cable and the the newer 24 pin cable. The atx standard has two different versions of the main power cable.
24 pin power connector at the power supply cable. This means that the newer 24 pin power supply is useful for motherboards that require more power and therefore eliminates the need for atx 12v power supplies to provide an auxiliary power cable. An atx power supply provides a number of peripheral power connectors and in modern systems two connectors for the motherboard. The 24 pin cable is just the 20 pin cable with 4 extra wires added to the end to provide extra current.
Almost all of the new power supplies used today feature a 24 pin power connector to connect to a computer motherboard however some motherboards still feature a 20 pin atx power connection. Atx power connector on the motherboard consists of two rows of 10 pins. 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. Atx specification includes not only power supply unit but also interface to case and motherboard.
1 x 20 pin molex 39 29 9202 connector at the motherboard. This connector from the atx btx power supply can only be fitted in one way. 1 x 20 pin connector at the power supply cable. One situation where the pin count comes into play is when deciding if a particular power supply works with your system.
In addition to the old at standard atx 2 0 has one extra voltage line available 3 3v a connector chain lined to the single 20 pin and a power on wire that allows software to turn off the psu. This connector from the atx power supply can only be fitted in one way. 24 pin molex 44206 0007 connector at the motherboard. The original atx standard supported a 20 pin connector with a very similar pinout as the 24 pin connector but with pins 11 12 23 and 24 omitted.
20 4 pin power connector at the power supply cable.