Acer Aspire X3990 - Page 91

83 Chapter 5
ATX_ POWER: ATX 24-pin Power Connector
ATX12V: ATX 12V Power Connector
Pin Signal Name Pin Signal Name
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3COM 15COM
4 +5V 16 PS_ON
5COM 17COM
6+5V 18COM
7COM 19COM
8 PWR OK 20 -5V
9+5VSB 21+5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 COM
Pin Signal Name
1 Ground
2 Ground
3+12V
4+12V