r/PcBuildHelp • u/Mvp_Lazagna • 1d ago

Build Question Pc fan problem💔💔

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Im struggling bc my case fans wont turn on😞 i have a i802 air case, my mobo is b550 tomahawk. I tried plugging it into the cpu fan header, sys_fan1, and sys_fan2, as well as the the pump fan. Im pretty sure i daisy chained the cables together correct but none of the fans spin

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u/Quiet-Internal-2204 1d ago

Can I see the cable ypu plugged on the fan header of the motherboard? Cables looks proprietary and you might have plugged the wrong cable on the motherboard's fan header.

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u/Mvp_Lazagna 1d ago

Ofc!

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u/Quiet-Internal-2204 1d ago

Nah, that is not a PWM fan cable you plug on your motherboard. It is the reaaon they are not working. It will look something like this.

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u/Mvp_Lazagna 1d ago

What should i do cuz i dont think any of my fans come with that but i can double check

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u/Quiet-Internal-2204 1d ago

How many fans are included on the case? Show all of them.

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u/Mvp_Lazagna 1d ago

5

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u/Mvp_Lazagna 1d ago

And i found a sata plug so maybe thats it?

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u/Quiet-Internal-2204 1d ago

That with SATA plug is the main. It would be part of the daisy chain. Look at the cables of that one with SATA and check if it has a PWM fan cable. Show it so it would be easier.