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.
The success of installing the Scythe Kaze Flex 120/140 ARGB fans will ultimately come down to how forgiving your case and motherboard are. While the ARGB cable is fantastically long, and will ...