Thanks CkChong for a great and needed app! I am having the same issues as Random Mike. When the server is first turned on, the app doesn't take control of the fans until I press the run now button. The chart shows the fans at idle and the PWM at 0% but the fans are at full speed. I press run now and the speed drops to 0%. I have to do this for each controller then the app works as it should. The controller changed position after I rebooted. I found this out when my CPU fan was being controlled even though I purposely made sure it was controlled by the BIOS and not the app. I remapped the controllers and now all is fine. I seems like if you add more controllers and fans to the app, the position changes sometimes so make sure all fans are setup before configuring. Thanks again!