Hi Dark Mantis
I too have the similar fans in my HAF-912 Advanced cabinet, and board is GA-H57M-USB3.
There is one system fan header on the board, but i don't know how to connect the fan(s) to it. Though all are powered by 12V connectors of power supply, the fan header on the board is not utilized. I want to control them via motherboard.
Is there any way out?