We've got a new dual Xeon at work, and the case has an array of 4-pin fans (the new PWM style ones, like this, some pictures here). The motherboard has enough 4-pin headers, but they're out of reach.
Am putting together a PC and have run into a problem with the MB/case. The case fan has a 3-hole connector and all system fan connectors on the MB are 4-pin. Case: Fractal Design Define R5 Black ...