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AB350 Gaming ITX CHA_FAN1 not working
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Granola6614 View Drop Down
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Points: 180 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Granola6614 Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2026 at 12:21am
Originally posted by Xaltar Xaltar wrote:

Better yet, point ASRock Tech Support to this thread so they can see everything
you have both tried.

Good luck


Hi, I did it yesterday. I hope they will follow-up.
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Granola6614 View Drop Down
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Points: 180 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Granola6614 Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 25 minutes ago at 2:00am
Originally posted by wino wino wrote:

I don?�t know, that?�s the only thing I could think of ;)

If you've already reported the issue to ASRock support, you might want to mention that the voltage issue isn't unique to you. It's possible it's a BIOS error.


Hi Wino,
I just wanted to let you know that ASRock sent me a modified version of the latest UEFI (they named the file V10.50A) and it has solved the issue on my motherboard. Now the CHA_FAN1 header works properly in PWM mode, and I measured 12 volts on the second pin of this header. The other fan headers also work fine.

Let me know if you want me to send this file to you, or you can ask it directly to ASRock.
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Xaltar View Drop Down
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Points: 37333 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 15 minutes ago at 6:10am
Awesome, glad to hear it. I suspect ASRock will likely include the fix in the next
BIOS update, probably fairly soon. Thanks for bringing it to their attention
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