Foxconn B75M - Manual (Page 21)

2-4 Install other Internal Connectors
Power Connectors
This motherboard uses an ATX power supply. In order not to damage any device, make sure all
the devices have been installed properly before applying the power supply.
24-pin ATX Power Connector : PWR1
PWR1 is the ATX power supply connector. Make sure that the power supply cable and pins are
properly aligned with the connector on the motherboard. Firmly plug the power supply cable into
the connector and make sure it is secure.
4-pin ATX 12 V Power Connector : PWR2
Connect the 4-pin ATX 12V power supply to PWR2 and provides power to the CPU.
20-Pin Power
Pin No. 24
3 1
GND +12V
4 2
PWR2
PWR1
24 13
12 1
Pin # Definition Pin # Definition
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON(Soft On/Off)
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 Power Good 20 NC
9 +5V SB(Stand by +5V) 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 3.3V 24 GND
Pin # Definition
1 GND
2 GND
3 +12V
4 +12V
We recommend you using a 24-pin power
supply. If you are using a 20-pin power
supply, you need to align the ATX power
connector according to the picture.
HARDWARE INSTALLATION
14