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3 pin/molex on a 4 pin

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  • Connection
  • Software
  • Components
Last response: in Components
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April 9, 2013 10:04:15 PM

My CPU fan is a 4 pin connection. However, I can't change the speed with the BIOS or any software so I'm just going to connect it to the PSU. Do I just use a 3 pin to molex to connect to the PSU? The 4th slot on the 4 pin is for PWM, am I correct? So I'm assuming I just need a 3 pin to 4 pin molex.

More about : pin molex pin

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April 9, 2013 10:25:37 PM

it is correct 4th pin is for pwm control and supposed to be connected to motherboard. if you connect directly to psu with 3 pins it will run at maximum rpm.
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