https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 17 Apr 2026 12:29:23 +0000 Wed, 11 Feb 2026 00:46:26 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113449 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113449&PID=200905&title=uart-port#200905 Author: Xaltar
Subject: 113449
Posted: 11 Feb 2026 at 12:46am

Hi M440, a bit of digging led me to this thread on redit:
https://www.reddit.com/r/buildapc/comments/pr1mpf/what_is_uart1_and_what_do_i_plug_in_there_i_have/

It looks to be something used in house at ASRock for debugging/programming ROMs etc.
From what I gather reading through that thread it may also be what provides the
data for boards that have Dr. Debug displays.

Given that the few mentions I managed to find in ASRock manuals said "for factory
use only" I don't imagine ASRock would be willing to provide any documentation
on the header/port.

Regardless, I suspect it is useless as a UART port for any purpose other than
debugging with ASRock's own in house testing tools.

Great question and a neat find, after reading your question I found UART ports
on several of my own ASRock boards too. Might be fun to rig up a reader that can
output the codes for debugging. Not something I really need as all my boards still
work perfectly, even my old socket 775 and socket 462 boards.

Hope this helps. You could always try a support ticket, someone at ASRock may
be willing to give a bit more detail, I doubt it but no harm trying. ]]> Wed, 11 Feb 2026 00:46:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=113449&PID=200905&title=uart-port#200905 https://forum.asrock.com/forum_posts.asp?TID=113449&PID=200904&title=uart-port#200904 Author: M440
Subject: 113449
Posted: 10 Feb 2026 at 11:53pm

hello,

there is an UART port on my Asrock AM5 motherboard. Is there any documentation for it? ]]> Tue, 10 Feb 2026 23:53:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113449&PID=200904&title=uart-port#200904