I'm currently using Tricools and the only way I can change the speed is through the switch. I'll be getting this mobo http://www.newegg.com/Product/...x?Item=N82E16813128062 and I want to be able to control a 120mm case fan and 92mm cpu fan with Speed Fan. What fans will be compatible with this? I've heard about PWM but I'm not exactly sure what it is. Are 4 pin fans guaranteed to have RPM sensing and control?