AMD Motherboards - B450 ITX "DC MODE" broken since 4.10

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B450 ITX "DC MODE" broken since 4.10

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=18409
Printed Date: 09 Aug 2025 at 3:52am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B450 ITX "DC MODE" broken since 4.10

Posted By: JB123
Subject: B450 ITX "DC MODE" broken since 4.10
Date Posted: 19 Mar 2021 at 3:34am

Hello,

Smart Fan Speed Control has not worked properly since BIOS 4.10. Though a user can select "DC MODE," upon reboot, fans are again clearly in PWM mode despite that "DC MODE" continues to be displayed. Reverting to BIOS 4.10 resolves the problem. Thus, this is a problem caused first before 4.20 and carried over to 4.40, despite that I have previously brought this to your attention (I received no acknowledgement of the message, the problem, or that you're working to fix it, when I last corresponded). DC MODE fan/pump control is a critical and basic motherboard function that MUST work. Until this problem is fixed, I am unable to use the motherboard with Ryzen 5000 series chips and have no access to "SAM." Thank you