https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 14 May 2026 16:03:58 +0000 Thu, 07 Dec 2023 06:13:05 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=27053 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108494&title=what-connectors-for-the-com-ports-for-rs232pound#108494 Author: Xaltar
Subject: 27053
Posted: 07 Dec 2023 at 6:13am

Thanks for sharing the info, I didn't notice that based on the pics but now that
you mention it, I can see what you mean. I wonder why they went that route...
Ensuring compatibility with an autosense function perhaps or maybe just to differentiate
between USB headers and COM headers. Regardless of the connector, it should still
be compatible with standard RS232 devices.

I am glad you found the info you were looking for. Workstation/server boards often
have oddities like this.

Edited by Xaltar - 07 Dec 2023 at 6:13am]]> Thu, 07 Dec 2023 06:13:05 +0000 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108494&title=what-connectors-for-the-com-ports-for-rs232pound#108494 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108488&title=what-connectors-for-the-com-ports-for-rs232pound#108488 Author: HammyHavoc
Subject: 27053
Posted: 06 Dec 2023 at 9:43pm

Xaltar wrote: Any of the ports marked "COM" will work for RS232 as far as I am aware. By that I mean both 9 and 25 pin ports. AFAIK the ports exist on these boards specifically to provide legacy RS232 support for various industrial and commercial devices.

The question was about connectors for the motherboard headers themselves as they're completely non-standard at 2mm pitch (they don't follow the IDE standard), ergo the average baffle and its accompanying cable won't fit due to the connector being wrong.

Weirdly though, the LPT header is the standard 2.54mm pitch. Go figure.

FWIW, if anybody else wants this information, they're Chyao Shiunn JS-2008A-2.]]> Wed, 06 Dec 2023 21:43:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108488&title=what-connectors-for-the-com-ports-for-rs232pound#108488 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108487&title=what-connectors-for-the-com-ports-for-rs232pound#108487 Author: Xaltar
Subject: 27053
Posted: 06 Dec 2023 at 9:39pm

Any of the ports marked "COM" will work for RS232 as far as I am aware. By that
I mean both 9 and 25 pin ports. AFAIK the ports exist on these boards specifically
to provide legacy RS232 support for various industrial and commercial devices.]]> Wed, 06 Dec 2023 21:39:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108487&title=what-connectors-for-the-com-ports-for-rs232pound#108487 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108485&title=what-connectors-for-the-com-ports-for-rs232pound#108485 Author: HammyHavoc
Subject: 27053
Posted: 06 Dec 2023 at 8:40am

Photo here: https://www.reddit.com/r/electronics/s/Dve2zeqB6Q]]> Wed, 06 Dec 2023 08:40:40 +0000 https://forum.asrock.com/forum_posts.asp?TID=27053&PID=108485&title=what-connectors-for-the-com-ports-for-rs232pound#108485