![Amazon.com: SinLoon 3 Pin 4 Pin Fan Adapter PWM PC Chassis Cooling Fan Hub,Chassis Fan Pressure Regulating Governor,8 Way Splitter 12V Speed Controller with 6 Pin Power Port(8 Way with Cable Black ) : Amazon.com: SinLoon 3 Pin 4 Pin Fan Adapter PWM PC Chassis Cooling Fan Hub,Chassis Fan Pressure Regulating Governor,8 Way Splitter 12V Speed Controller with 6 Pin Power Port(8 Way with Cable Black ) :](https://m.media-amazon.com/images/I/71CmR4hsu9L.jpg)
Amazon.com: SinLoon 3 Pin 4 Pin Fan Adapter PWM PC Chassis Cooling Fan Hub,Chassis Fan Pressure Regulating Governor,8 Way Splitter 12V Speed Controller with 6 Pin Power Port(8 Way with Cable Black ) :
![pins - Is the PWM rail of a 4pin pwm Computer fan Positive or negative - Electrical Engineering Stack Exchange pins - Is the PWM rail of a 4pin pwm Computer fan Positive or negative - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/5ipAk.png)
pins - Is the PWM rail of a 4pin pwm Computer fan Positive or negative - Electrical Engineering Stack Exchange
Is it normal for a 4 pin fan splitter to have 1 4 pin input and x 3 pin inputs? Does that still work with PWM? - Quora
![3-pin CPU fan always at 100% (due to PWM only mode), should I connect it to SYS_FAN (Voltage mode)? : r/buildapc 3-pin CPU fan always at 100% (due to PWM only mode), should I connect it to SYS_FAN (Voltage mode)? : r/buildapc](http://i.imgur.com/mVb4lTy.jpg)