https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 16 Apr 2026 14:20:59 +0000 Tue, 09 Aug 2022 01:00:38 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=23388 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=23388&PID=100869&title=available-power-on-pwm-headerspound#100869 Author: BerMM
Subject: 23388
Posted: 09 Aug 2022 at 1:00am

Thanks. I should clarify. I have 3 pairs of fans, with each pair on its own header. The most power hungry pair is 1.1 amp total with the others at 0.6 amp per header. I could split the 1.1 amp pair to 0.55 amp per header if necessary.]]> Tue, 09 Aug 2022 01:00:38 +0000 https://forum.asrock.com/forum_posts.asp?TID=23388&PID=100869&title=available-power-on-pwm-headerspound#100869 https://forum.asrock.com/forum_posts.asp?TID=23388&PID=100862&title=available-power-on-pwm-headerspound#100862 Author: threadzipper1957
Subject: 23388
Posted: 08 Aug 2022 at 6:34pm

4 Pin fan header usually provides 1A.
But if I were you, I would not connect so many fabns to one header, there is a good chance, you burn out the fan controller chip.
Fans always have a longer life span, when they run on a fixed speed, just connect the to a Molex from the PSU, and use a resistor cable, also you can then use a splitter cable.
Multiple fanbs, on one header, is never a good idea.]]> Mon, 08 Aug 2022 18:34:04 +0000 https://forum.asrock.com/forum_posts.asp?TID=23388&PID=100862&title=available-power-on-pwm-headerspound#100862 https://forum.asrock.com/forum_posts.asp?TID=23388&PID=97636&title=available-power-on-pwm-headerspound#97636 Author: BerMM
Subject: 23388
Posted: 29 Mar 2022 at 10:09am

How much can I safely draw from each PWM header on the B550 Taichi? I'd like to use a pair of 0.55A fans and four 0.3A fans.]]> Tue, 29 Mar 2022 10:09:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=23388&PID=97636&title=available-power-on-pwm-headerspound#97636