Its plugged into the motherboard, I don't know about resistors and I don't know if my motherboard is controling the voltage of the fan. I don't see a green sensor thing on the fan. I plugged the Zalman fan on my downstairs computer and it was going full blast the whole time. When I plug it in the computer I want it to be in, it spins but doesn't blow any air and it stops spinning at the screen.