ASRock Forums : X370 taichi chassis fan header https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 03 May 2026 20:13:11 +0000 Tue, 17 Oct 2017 19:02:11 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=6325 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[X370 taichi chassis fan header : If you are using a three pin fan...]]> https://forum.asrock.com/forum_posts.asp?TID=6325&PID=38111&title=x370-taichi-chassis-fan-header#38111 Author: parsec
Subject: 6325
Posted: 17 Oct 2017 at 7:02pm

If you are using a three pin fan on the Chassis3 fan header, you must set the CHA_FAN3 to DC mode, or it will run at full speed all the time.

According to the information on the page below, you can configure the CHA_FAN3 header to either PWM mode for a four pin fan, or DC mode for a three pin fan. Just click on "Which fan type can I use on AM4 motherboard to support fan speed control?" :

http://www.asrock.com/microsite/AM4TSD/
]]> Tue, 17 Oct 2017 19:02:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=6325&PID=38111&title=x370-taichi-chassis-fan-header#38111 <![CDATA[X370 taichi chassis fan header : I made the changes on CHA_FAN3...]]> https://forum.asrock.com/forum_posts.asp?TID=6325&PID=37927&title=x370-taichi-chassis-fan-header#37927 Author: meinoob
Subject: 6325
Posted: 13 Oct 2017 at 7:24pm

I made the changes on CHA_FAN3 in the UEFI under HW Monitor but the fan only runs at nearly 100% all the time. 
I tried all settings including Custom. 
The CHA_FAN1-2 can change the fan speed differently.

Please help.

]]> Fri, 13 Oct 2017 19:24:08 +0000 https://forum.asrock.com/forum_posts.asp?TID=6325&PID=37927&title=x370-taichi-chassis-fan-header#37927