97044906 198Ee68DfeAizeMashehu’s writes “I built two fan controllers into a happy-face baybus for two sets of fan arrays so I can hear the sound of silence while the eight large fans chug-a-lug-lug. One knob on the new fanbus controlls the two rear 80mm fans blowing into the water-cooling radiator (in addition to the existing 120mm fan with rear-mounted speed control knob sucking air out of the radiator from the other side) and the other knob controls the 2 front 80mm fans that blow air around 5 of the fastest hard drives in the machine. You can see a close up as well as an explaination of the switch here and the main machine that this is wired to in the other photos in this series.” Link.