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The final result: how I powered an AMD Wraith CPU cooler with an adjustable 12V DC power supply

How to power a 4-pin CPU fan? - programming.dev

I disassembled an AMD CPU Wraith Cooler, meaning, I took the fan off of the heatsink, because I want to attach the fan on top of a Raspberry Pi that I’m using as a router. The Pi runs quite hot becaus...

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Thank you so much for all the great advice! What a nice community! :)

I pushed out the pins from the 4-pin connector using a SIM tool:

I bought a 12V DC power supply with adjustable voltage (3~12) so that I can adjust the fan speed to my liking (noise, temps). The power supply came with a bipolar terminal. How in the world could I be this lucky. No need to carve any wires here (although it would have been nice to finally learn how to do that too...):

I put back the sense and control pins into the connector in order to avoid accidental shorts and what not. I have no idea why ground goes into the negative node, but it was the only plausible configuration, since the power simply has to come from the positive node, according to conventional current:

And voila! I have no idea why I'm unable to upload the GIF of my fan spinning, so you'll have to take my word for it.

Thanks again!

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