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Asrock AB350M PRO4 Fan controll problems.

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mateherd View Drop Down
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    Posted: 19 Nov 2017 at 8:19pm
I have an Asrock AB350M PRO4 motherboard with 2 chassis fans. The 1.
one connected to my cha_fan1 4 pin connector with a 3pin cable,
it works fine. I can controll it's speed.


But the other connected to my cha_fan2 3pin connector with a 3pin cable running at full speed and not even appear at A-tunning utility at FAN tuning(but the program can see it bcs at the 1st picture it shows it's rpm).


How can I change the cha_fan2 speed?

Thank you!!

Edited by mateherd - 19 Nov 2017 at 8:26pm
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johndms View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johndms Quote  Post ReplyReply Direct Link To This Post Posted: 20 Nov 2017 at 7:29am
Originally posted by mateherd mateherd wrote:

How can I change the cha_fan2 speed?

Thank you!!
You don't. Only CHA_FAN1 is able to be controlled, and only if using a 4-pin fan. CHA_FAN2 doesn't support fan control. I use a 3-way fan splitter that cost around $5 on newegg.

http://www.asrock.com/microsite/AM4TSD/ - Click on the section "Which fan type can I use on AM4 motherboard to support fan speed control?"


Edited by johndms - 20 Nov 2017 at 7:29am
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