What connectors for the COM ports for RS232£
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=27053
Printed Date: 11 May 2025 at 2:14pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: What connectors for the COM ports for RS232£
Posted By: HammyHavoc
Subject: What connectors for the COM ports for RS232£
Date Posted: 06 Dec 2023 at 8:40am
| Photo here: https://www.reddit.com/r/electronics/s/Dve2zeqB6Q" rel="nofollow - https://www.reddit.com/r/electronics/s/Dve2zeqB6Q |
Replies:
Posted By: Xaltar
Date Posted: 06 Dec 2023 at 9:39pm
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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. ------------- 
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Posted By: HammyHavoc
Date Posted: 06 Dec 2023 at 9:43pm
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. |
Xaltar wrote:Posted By: Xaltar
Date Posted: 07 Dec 2023 at 6:13am
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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. -------------
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