ASRock Forums : Z370m-itx/ac - PWM not working https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 10 Apr 2026 01:36:00 +0000 Mon, 19 Mar 2018 08:01:52 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=8112 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[Z370m-itx/ac - PWM not working : I&#039;m of the understanding...]]> https://forum.asrock.com/forum_posts.asp?TID=8112&PID=48086&title=z370mitx-ac-pwm-not-working#48086 Author: wardog
Subject: 8112
Posted: 19 Mar 2018 at 8:01am

I'm of the understanding No. And the splitter is the reason.

Not that a signal cannot be "sent' UP the splitter to the fans, but that the IC responsible does NOT like seeing BOTH fans signal come back.


]]> Mon, 19 Mar 2018 08:01:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=8112&PID=48086&title=z370mitx-ac-pwm-not-working#48086 <![CDATA[Z370m-itx/ac - PWM not working : I have 2x Arctic F8 PWM fans connected...]]> https://forum.asrock.com/forum_posts.asp?TID=8112&PID=48084&title=z370mitx-ac-pwm-not-working#48084 Author: openupitsdave
Subject: 8112
Posted: 19 Mar 2018 at 7:44am

I have 2x Arctic F8 PWM fans connected to a splitter which connects to CHA_FAN1. I try to make adjustments in bios but the fans spin full speed when set to PWM. In DC mode, I have to set it to Standard but it just stays at a static rpm...Performance mode or SIlent modes do not work. 

Can this be fixed with a future bios update?
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