Asrock AB350M PRO4 Fan controll problems.
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=6638
Printed Date: 19 Jun 2025 at 3:49am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Asrock AB350M PRO4 Fan controll problems.
Posted By: mateherd
Subject: Asrock AB350M PRO4 Fan controll problems.
Date Posted: 19 Nov 2017 at 8:19pm
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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!! |
Replies:
Posted By: johndms
Date Posted: 20 Nov 2017 at 7:29am
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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/" rel="nofollow - http://www.asrock.com/microsite/AM4TSD/ - Click on the section "Which fan type can I use on AM4 motherboard to support fan speed control?"
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mateherd wrote: