13
 
CPU_FAN1, SYS_FAN1~2: 
 (PWM)  DC   PWM  
12V DC 
 3 ( PWM) PWM 
 100%  PWM  
DC  
 PWM  DC  BIOS >  HARDWARE MONITOR 
 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