AMD Motherboards - AB350 pro4 fan header problem

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AB350 pro4 fan header problem

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=5810
Printed Date: 17 May 2024 at 11:56am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: AB350 pro4 fan header problem

Posted By: justfine58
Subject: AB350 pro4 fan header problem
Date Posted: 08 Aug 2017 at 2:38pm

" rel="nofollow - I want to connect the rear chassis fan to CHA_FAN1 and run it in DC mode.

I made the changes in the UEFI under HW Monitor but the fan doesn't react, instead it runs at nearly 100% all the time.

I tried all settings including Custom. The two front fans are connected to CHA_FAN2-3 and they respond to similar changes as they should.

I've also tested with another fan to confirm that it's the header that's causing the problem.

I'm starting to think that the motherboard is faulty. Can you help?

Replies:

Posted By: ASRock_TSD
Date Posted: 16 Aug 2017 at 1:50pm

Dear justfine58,

Greetings, this is ASRock TSD.

For AB350 Pro4, there are three chassis fan connector, CHA_FAN1, CHA_FAN2 and CHA_FAN3.

CHA_FAN2 and CHA_FAN3 could control both 3-pin and 4-pin fan, but CHA_FAN1 could only control 4-pin fan.

Regarding your question, please install a 4-pin fan on CHA_FAN1 to customize the fan setting.

If connecting 3-pin fan, it will work at full speed.

Here is the specification for your reference as below.

Link: http://www.asrock.com/MB/AMD/AB350%20Pro4/index.asp#Specification" rel="nofollow - http://www.asrock.com/MB/AMD/AB350%20Pro4/index.asp#Specification

Besides, please also refer to the following link for the fan type specification and information.

http://www.asrock.com/support/faq.us.asp%3Fid=427" rel="nofollow - http://www.asrock.com/support/faq.us.asp?id=427

Thanks!

All the best,

ASRock TSD