13
 
CPU_FAN1SYS_FAN1~2: 
    PWM ()DC PWM
12V         
 DC
               3 (Non-PWM)PWM  
100%
         PWM/DC 
   
BIOS > HARDWARE MONITORPWMDC
PWM/DC 
 
PWM/ DC
      CPU
PWM 
DC
1
CPU_FAN1
1
SYS_FAN1/ 2
PWM
1 Ground 2 +12V
3 Sense 4 Speed Control Signal
DC
1 Ground 2 Voltage Control
3 Sense 4 NC