Is that third cable on the adapter a 9V? It didn't have a label. Also, is there software that would let me change the voltage output of a CPU Fan header on the motherboard so that I can control the pump speed/sound through software instead of having to manually switch cables.
@francisco9751, I personally don't see a need for the sound unless I have all my case fans at full speed because it has a noticeably, distinct sound. I don't want it to be the only sound that is strikingly audible so I keep the motor at 7V. 12V isn't awful but I just prefer a quiet case when the CPU and GPU are at stock clocks.