While installing a new power supply, you notice the connector on the power supply cable has 20 pins and the power connector on the motherboard has 24 pins. Is this okay?
A)This is not a problem because the motherboard is using a proprietary ATX power supply and the four extra pins are used for redundant grounding.
B)This may work, but this is taking a chance.
C)No, the power supply will not work.

Question

Quizplus · Accepted Answer

Sometimes this will work, but success if not guaranteed.
Key Takeaway: It's best to stick with a power supply and power supply connection that are specifically made to work with the motherboard. Also, pins 21-23 provide +5V each, and pin 24 acts as a ground.

While Installing a New Power Supply, You Notice the Connector