Do you have any suggestions how I can change this?
- Buy new Fans that can be controlled with PWM. (=4 pin fans)
or
- Buy the
passive Splitty9.
The Splitty9 Active PWM delivers +12V directly from the SATA Connector to all Fan connectors.
You should not be able to control your voltage regulated 3 pin fans at all. It is supposed to be either 0 RPM or Maximum RPM.
The Splitty9 Active only works correctly with PWM regulated fans (4 pin fans)