3 pin CPU fan will work with the mobo's 4 pin connector, right?

Discussion in 'OT Technology' started by Cam, Sep 19, 2009.

  1. Cam

    Cam New Member

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  2. dorkultra

    dorkultra OT's resident crohns dude OT Supporter

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    yeah, i have one on my motherboard. i think the extra pin is for temp sensing or rpm or something
     
  3. Cam

    Cam New Member

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    Thanks. it's working. I think.
     
  4. XR250rdr

    XR250rdr OT Supporter

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    4th pin is PWM. The locking tab is offset on the board header so you can connect a 3 pin fan to it.
     
  5. deusexaethera

    deusexaethera OT Supporter

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    What exactly does the pulsewidth modulation do, anyway? I thought the fan speed was controlled by adjusting the input voltage.
     
  6. GOGZILLA

    GOGZILLA Double-Uranium Member

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  7. DIABLOS

    DIABLOS New Member

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    It doe'snt adjust voltage PWM switchs the fan on and off really quick to control the speed it spins.
     

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