fan port technical information
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=18845
Printed Date: 04 Nov 2025 at 11:26pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: fan port technical information
Posted By: thebigbangtheory
Subject: fan port technical information
Date Posted: 13 May 2021 at 10:45pm
Good morning all,
I want to know the number of fan that can be met by fan port of a motherboard in 3 pin and 4 pin.
the number of amps for each port if anyone has an idea ?
thank you.
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Replies:
Posted By: ASRock_TSD
Date Posted: 17 May 2021 at 4:48pm
Hi thebigbangtheory,
Thank you for your post.
You can find the detailed information on the motherboard specification page.
The Fan header designs vary in different motherboards,
If you have other questions, please feel free to contact us.
All the best,
ASRock TSD
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Posted By: thebigbangtheory
Date Posted: 18 May 2021 at 12:57am
hi, thank you for your answer but I can't find the information in the manual or on the web page of your site if there is a way to get its information?
so the question maximum number of fan on each port and 3 and 4 pin the number of amps on each port thank you.
https://www.asrock.com/mb/Intel/B75%20Pro3/" rel="nofollow - https://www.asrock.com/mb/Intel/B75%20Pro3/
https://www.asrock.com/mb/Intel/B75%20Pro3/#Manual" rel="nofollow - https://www.asrock.com/mb/Intel/B75%20Pro3/#Manual
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Posted By: ASRock_TSD
Date Posted: 18 May 2021 at 5:28pm
Hi thebigbangtheory,
Thank you for your post.
Here is the detailed information of the FAN header on B75 Pro3
CPU_FAN1: 1A, 4 pin fan header, can't control 3 pin fan speed
CPU_FAN2: 0.5A, 3 pin fan header, can control fan speed
CHA_FAN1: 1A, 4 pin fan header, can't control 3 pin fan speed
CHA_FAN2: 0.5A, 3 pin fan header, can control fan speed
PWR_FAN1: 1A, 3 pin fan header, can't control fan speed
If you have other questions, please feel free to contact us.
All the best,
ASRock TSD
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