I am building virtually the same system as you, Maximus Hero XI , Thermaltake Pure Plus 14 RGB TT Premium Edition X 4, Thermaltake Pure Plus 12 RGB TT Premium Edition X5, 360mm Water 3.0 ARGB. There is two 12 volt addressable headers on the board, plus two 5 volt addressable headers which are right along side the 12 volts. I am using two controllers, one i ordered separately a Thermaltake TT Sync SATA Powered 9 Port Addressable LED Controller Premium Edition and will use the other from the 3 pack boxes of fans. I am in the process of building the machine. I am in new territory when it comes to rgb but when I am done I will post some pics on how it was connected. It seems a bit tricky with Aura and Thermaltake but the controllers are compatible from everything I read and saw.