I don't know if they are PWM Fan because I do not know what this is.
The SysFan1 is a 3 pin
SysFan2 is 3 Pin but i changed him to SysFan3
Sysfan2 is a 4 Pin
The SysFan1 is a 3 pin
SysFan2 is 3 Pin but i changed him to SysFan3
Sysfan2 is a 4 Pin