Case Fans to PSU or to motherboard?

[PP Mguire]

Like I said before, it's all based entirely on the bios on each particular motherboard so I can't answer that really. I'm going to say you can control fan speed on all ports on your motherboard but again not 100% guaranteed. You have to go into your bios and look for yourself.

 

[Rawan AbuSalman]

Well, turns out the front fan cable is too short to reach the power fan header. Connected directly to PSU.