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BTX motherboard power supply

pinout

Standard interface between BTX motherboard and compatible power supply

24 pin MOLEX 44206-0007
24 pin MOLEX 44206-0007 connector  at the motherboard
PinSignalDescription
1+3.3 VDC 
2+3.3 VDC 
3COM 
4+5 VDC 
5COM 
6+5 VDC 
7COM 
8PWR_OKPower good - indicate that VDC voltages are in range.
9+5 VSBStandby voltage
10+12 VDC 
11+12 VDC 
12+3.3 VDC 
13+3.3 VDC 
14-12 VDC 
15COM 
16PS_ON#Active low. TTL compatible (0.1-0.8V low; 2.0 high?). When low - DC outputs are enabled. When high - power supply should not deliver DC current.
17COM 
18COM 
19COM 
20N/C 
21+5 VDC 
22+5 VDC 
23+5 VDC 
24COM 

24 pin MOLEX 39-01-2240
24 pin MOLEX 39-01-2240 connector  at the power supply cable

Source:www.pinouts.ru