[SOLVED] how to install 3 pin fan on 4 pin header

The 4th pin allows PWM control of fan speed, but your 3 pin will connect to it fine..you may need to go in to your BIOS and set the control from PWM to DC.
As far as which 3 of the 4 pins to use, your 3 pin connector has slots on it and will only fit one way
 
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The 4th pin allows PWM control of fan speed, but your 3 pin will connect to it fine..you may need to go in to your BIOS and set the control from PWM to DC.
As far as which 3 of the 4 pins to use, your 3 pin connector has slots on it and will only fit one way
 
Reactions: Inthrutheoutdoor

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