Zind Tokay Posted August 20, 2013 Share Posted August 20, 2013 Some advice please. I've just bought a twin pack of PWM fans, they have 3 pins not 4 as I was expecting. The packaging doesn't mention PWM at all but a sticker on the box does say PWM. I'm using the fans with a cooling node and they do seem to work better, ie the software more accurately controls the fan speed. What is the difference between the 3 and 4 pin PWM fans? Does it matter? How can I tell I definitely have PWM fans. Many thanks for any help offered. Link to comment Share on other sites More sharing options...
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