Discussion in 'OT Technology' started by Cam, Sep 19, 2009.
yeah, i have one on my motherboard. i think the extra pin is for temp sensing or rpm or something
Thanks. it's working. I think.
4th pin is PWM. The locking tab is offset on the board header so you can connect a 3 pin fan to it.
What exactly does the pulsewidth modulation do, anyway? I thought the fan speed was controlled by adjusting the input voltage.
it is a way to adjust voltage
It doe'snt adjust voltage PWM switchs the fan on and off really quick to control the speed it spins.