Where is the fan controller and how do I use it? There is a built in fan controller that connects to the top panel via the fan hub on the back side of the motherboard tray. It does 3 different speeds 100%, 70% and 40%. Plug your fans into the fan hub you are good to go. Have more questions? Submit a request Comments Zacharie Roitner March 27, 2015 15:55 mine makes a weird constant buzzing noise @ 70%, but no noise at 40% or 100%... Phantom 410, stock fans.