13
   
CPU_FAN1, SYS_FAN1:  
  PWM (Pulse Width Modulation)  DC    . 
PWM    12V          
 . DC          . 
 PWM    3- (Non-PWM)   ,  100%  
      .      PWM  DC 
 .
     
PWM  DC      BIOS > HARDWARE MONITOR( 
)      .
PWM   DC  
 
PWM/ DC   ,     .
CPU       .
PWM    
 
DC    
 
1
CPU_FAN1
1
SYS_FAN1
PWM   
1 Ground 2 +12V
3 Sense 4 Speed Control Signal
DC   
1 Ground 2 Voltage Control
3 Sense 4 NC