From: me@privacy.invalid   
      
   On 03 Dec 2024 10:13:01 +0000 (GMT), Theo wrote:   
      
   > I'm guessing that the blue pin is actually the speed control PWM, and the   
   > green is to report spin speed back to the Pi.  If you don't care about that   
   > you don't need it.   
   >   
   > If you're unsure, you can just wire red and black and ignore the other two   
   > wires - the fan should spin at full speed and you won't be able to sense the   
   > spin speed, but maybe that's ok.   
      
   Tnx for the follow-up. According to the shop I could just snip the green   
   wire, so I've done that. I've set it to run at 60°C and the fan's not   
   turning (CPU temperature is 48°C).   
      
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