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Understanding Power Supplies

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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how to differentiate amongst power supplies

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