All about the various PC power supply cables and connectorsExplore further
2008-7-15u2002·u2002ATX 20+4 pin main power cable. Motherboards can come with either a 20 pin main power connector or a 24 pin main power connector. Many power supplies come with a 20+4 cable which is compatible with both 20 and 24 pin motherboards. A 20+4 power cable has two pieces: a 20 pin piece, and a 4 pin piece.
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