[MAG B550M Mortar Wifi] CPU fan value is missing (0 RPM in UEFI)

bredd158302e4

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Jun 26, 2022
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Notwithstanding @citay 's and @Alan J T 's advice, which is absolutely solid, I'll just add that I have two Asus TUF B350-M-PLUS GAMING motherboards and whenever I tried to use a be quiet! PWM fan on the CPU_FAN header, I'd get crazy speed indications - say 16,000 revs (yes, sixteen thousand) or 0, just like you. Any other fan I hooked up, for example a Noctua, Fractal Design or SilentiumPC - whatever, would be reported just fine.
So my suggestion would be a fan incompatibility, not a malfunction. Though of course I could be wrong.
Thank's for your suggestion, I can't say what is it. On my side I used cooler like Be Quiet shadow rock TF2 & Dark rock 4 (now) on few AM4 motherboard and I didn't face crazy indications like 16k RPM^^

@ Alan & citay : thank's for your contributions, I don't know if I have to do it myself but the thread can now be closed
 

citay

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Glad that it's now explained. No need to close threads, they will just naturally move backwards in the list over time.
 
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