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79 Chapter 5
ATX 12V: ATX 12V Power Connector
ATX
1: ATX 20-pin Power Connector
Pin Signal Name
1 +12V
2 +12V
3 Ground
4 Ground
Pin Signal Name Pin Signal Name
1 +3.3V 11 +3.3V
2 +3.3V 12 -12V
3 Ground 13 Ground
4 +5V 14 PS ON#
5 Ground 15 Ground
6 +5V 16 Ground
7 Ground 17 Ground
8PWRGD 18-5V
9 +5VSB 19 +5V
10 +12V 20 +5V