Biostar A58MD Owner's Manual | Page 9

Biostar Motherboards Owner's Manual - A58MD.
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 A58MD/A58MG/A58ML 

2.3 Connect 

Cooling 

Fans 

These fan headers support cooling-fans built in the computer. The fan cable and 
connector may be different according to the fan manufacturer. Connect the fan 
cable to the connector while matching the black wire to pin#1. 

CPU_FAN1: CPU Fan Header 

 
 

 
 
 

Pin

Assignment 

1 Ground 
2 +12V 

FAN RPM rate sense 

Smart Fan Control(By Fan) 

 

 

 

SYS_FAN1: System Fan Header   

 

Pin

Assignment 

1 Ground 
2 +12V 

FAN RPM rate sense 

 

 

 

Note: CPU_FAN1, SYS_FAN1 support 4-pin and 3-pin head connectors. When connecting 
with wires onto connectors, please note that the red wire is the positive and should be 
connected to pin#2, and the black wire is Ground and should be connected to GND.