Razer pwm Controller doesnt work

I ordered the Razer pwm controller a few days ago and so far everything is fine, but now I noticed during installation that the controller supplies electricity to the fans but does not recognize them (it is already recognized in synapse but if you click on it you can see you don't have fans)... love that on the controller or on my pc? I have to say that I still have an office pc that is to be replaced by a real gaming pc in a few weeks, but I wanted to try it out first and play around with the fan curve but I never got around to it... can anyone tell me help further? Best wishes flaux