Biostar G31-M7 V6.0 Owner's Manual | Page 15

Biostar Motherboards Owner's Manual - G31-M7 V6.0.
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G31-M7 

13 

 
JATXPWR1: ATX Power Source Connector 

This connector allows user to connect 24-pin power connector on the ATX 
power supply.   

1

12

13

24

 

Pin Assignment 

Pin 

Assignment 

13 +3.3V 

1 +3.3V 

14 -12V 

2 +3.3V 

15 Ground 

3 Ground 

16 PS_ON 

4 +5V 

17 Ground 

5 Ground 

18 Ground 

6 +5V 

19 Ground 

7 Ground 

20 NC 

8 PW_OK 

21 +5V 

9 Standby 

Voltage+5V 

22 +5V 

10 +12V 

23 +5V 

11 +12V 

24 Ground 

12 +3.3V 

 
JATXPWR2: ATX Power Source Connector 

By connecting this connector, it will provide +12V to CPU power circuit. 

 
 
 
 

Pin 

 
 

     

 
Assignment 

1 +12V 
2 +12V 
3 Ground 

1

2

3

4

4 Ground 

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