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How to add more 4 pin fan controllers (hardware hacking)

Fresh5 days ago
Mar 15, 20261151 views
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Problem

I'm looking at building a new system and most of the good cases come with several fans, but most of the motherboards I've looked at only have one 4 pin case fan header. I'm looking for a guide on hacking in an additional hwmon compatible controller to add a few more 4 pin PWM fan headers so I can h…

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Fix for: How to add more 4 pin fan controllers (hardware hacking)

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After reading everything I could find on the subject, it seems that the 4th pin contains the raw PWM signal, and the fan is expected to contain the mosfet and bypass diode required to use the PWM signal to regulate the voltage down from the 12v supp…

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