https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 13 Jun 2026 18:01:45 +0000 Sun, 25 Feb 2018 16:23:51 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=7736 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45973&title=asrock-taichi-am4-x370-fan-headers#45973 Author: kerberos_20
Subject: 7736
Posted: 25 Feb 2018 at 4:23pm

thats a true pwm yey
]]> Sun, 25 Feb 2018 16:23:51 +0000 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45973&title=asrock-taichi-am4-x370-fan-headers#45973 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45969&title=asrock-taichi-am4-x370-fan-headers#45969 Author: DunGoneNuts
Subject: 7736
Posted: 25 Feb 2018 at 2:23pm

This is what TS responded to my question:

the Fan are controlled via voltage PWM

I guess in other words......huh?

]]> Sun, 25 Feb 2018 14:23:48 +0000 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45969&title=asrock-taichi-am4-x370-fan-headers#45969 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45441&title=asrock-taichi-am4-x370-fan-headers#45441 Author: VUMeter
Subject: 7736
Posted: 19 Feb 2018 at 9:21pm

As for CHA_FAN2 (bottom of the board, under the PCIE5 slot), it works as PWM or Voltage mode.  I currently have a Noctua NF-A14PWM connected and am controlling it's speed using SpeedFan.
I did have a 120mm 3-pin fan from my old Gigabyte case connected and that worked too, with variable speed control.

As for the other headers, I am not sure/haven't tested.

*edit*
It looks like you are asking a more technical question, I don't know my away around testing the connections enough to answer that.  Sorry.]]> Mon, 19 Feb 2018 21:21:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45441&title=asrock-taichi-am4-x370-fan-headers#45441 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45424&title=asrock-taichi-am4-x370-fan-headers#45424 Author: DunGoneNuts
Subject: 7736
Posted: 19 Feb 2018 at 11:52am

Does anyone know for sure how the fan speed is controlled on the headers for the case fans?  Is it true PWM on pin 4 of the header, or is the speed of the fans controlled by voltage changes across pin 4?
]]> Mon, 19 Feb 2018 11:52:19 +0000 https://forum.asrock.com/forum_posts.asp?TID=7736&PID=45424&title=asrock-taichi-am4-x370-fan-headers#45424