What is the purpose of the 24 pin power supply connector?

More Information on the ATX 24-Pin 12V PSU Connector 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 (although some still may).

Can you use a 20 pin power supply on a 24 pin board?

“… you can plug a 20 pin cable into a 24 pin motherboard and it will work just fine. At least, it will for a while. They added those extra 4 pins for a reason. When you plug a 20 pin cable into a 24 pin connector you’re not providing the extra current carrying capacity which may be needed by the motherboard.

What pins to jump to start PSU?

Short between the green and black wires on the 24pin connector (as show below), with a paper clip or piece of wire. If all wires are black, place the connector with the lock clip facing up and short 4th and 5th pins (counting from left to right) in the upper row.

How do I test a 24-pin power supply?

To test your PSU:

  1. Shut off your PSU.
  2. Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.
  3. Locate pin 4 and pin 5 on your 24-pin cable.
  4. Bend your paper clip so the ends can be inserted into pin 4 and pin 5.
  5. Turn on the PSU.
  6. See if the PSU fan turns.

How much power does a 24 pin connector provide?

ATX 24 pin power supply connector pinout ATX 2.2 and later (ATX12V 2) is common ATX standard, 24 pin connector. Changes to ATX standard were made to support 75 watt PCI Express requirements. Most power is now provided on 12 V rails and the power on 3.3 V and 5 V rails was significantly reduced.

What is the 4-pin connector on the power supply?

4-pin Fan. The 4-pin Fan power connector is found on motherboards within a computer case. This connector provides power to cooling fans and is typically used on the fan that cools the CPU.

How do you connect a 20-pin to a 24 pin motherboard?

Technically, a 20-pin ATX connector can be plugged straight into a 24-pin motherboard socket, leaving male pins 11, 12, 23, and 24 unconnected. The four pins that you are leaving open are just redundant lines for higher current capability (see this guide to ATX connectors and pinouts).

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