How to differentiate amongst power supplies
| Type | Description | Picture |
| AT Power Supply | This power supply is used on older motherboards in AT style cases. It has 12 pins divided between 2 plugs. When plugged into a motherboard, the plugs should be arranged so that the black wires are next to each other. | ![]() |
| ATX Power Supply | Used in ATX form factor cases, this power supply has 20 pins. It is most common with AMD and non-P4 Intel processors. | ![]() |
| ATX+P4 Power Supply | This power supply has a standard 20 pin ATX male plug and an additional 4 pin male plug. It is used exclusively with Pentium 4 motherboards. | ![]() |
| Xeon Power Supply | This power supply has a 24 pin male plug and a 6 pin male plug. It is used exclusively with Xeon motherboards. | ![]() |
| Athlon MP Power Supply | This power supply has a 24 pin male plug and a 6 pin male plug. It is used exclusively with Xeon motherboards. | ![]() |
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