I have the sharkoon night shark as a case, and 3 included rgb fans. When I connect these fans (5V 3 pin) in the controller at the back of my case, it doesn't seem to be working. They do spin, but not light up as I expected. But when I connect the fans into my motherboard, they actually do light up. But now i can't control them, and they aren't in sync, unless I install an rgb software. But I wan't to control them through my case's buttons. Can aynone tell me why that rgb control at the back of my case isn't working?