Didn't even realize that there was such a thing as a 4-pin PWM motherboard fan header until... yesterday. Anyways, I had planned on slapping a 120mm Scythe on the Ultra-120 that will be cooling my ...
CPU_FAN and CPU_OPT are entirely different and serve distinct purposes in the context of a computer cooling system. CPU_FAN or CPU Fan Header is the primary 4-pin fan header on a motherboard, and it ...