https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 16 Apr 2026 03:54:49 +0000 Sat, 05 Aug 2023 18:38:34 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=26254 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=26254&PID=106882&title=asrock-b550-phantom-gaming-4-acs-enable-possible#106882 Author: Langur
Subject: 26254
Posted: 05 Aug 2023 at 6:38pm

Hi,

I use ASROCK B550 Phantom Gaming 4 ACS with v2.71.
I want to enable ACS to virtualize PCI devices using IOMMU.
But, I cannot find the ACS configuration item in the BIOS.

An existing topics referred to the following.
https://forum.asrock.com/forum_posts.asp?TID=26092

But, the configuration item does not appear in the BIOS of my motherboard.
I would be happy to get some information from you.

BR, Langur]]> Sat, 05 Aug 2023 18:38:34 +0000 https://forum.asrock.com/forum_posts.asp?TID=26254&PID=106882&title=asrock-b550-phantom-gaming-4-acs-enable-possible#106882