AMD Motherboards - X670E Steel Legend XHCI hand off not working

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X670E Steel Legend XHCI hand off not working

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=64115
Printed Date: 19 Sep 2024 at 11:06pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: X670E Steel Legend XHCI hand off not working

Posted By: Wozzatwo
Subject: X670E Steel Legend XHCI hand off not working
Date Posted: 15 Sep 2024 at 10:31pm

Hi, XHCI disabled mode for cpu lanes does not work. USB is still full speed, should be usb 2. This mode works for chipset.

Please look into it.

/Thanks

Replies:

Posted By: Wozzatwo
Date Posted: 15 Sep 2024 at 11:52pm

Ok i solved myself, found the correct setting.
So the "global" XCHI setting doesnt do it, but this setting seems to turn chiplet usb 3 to usb 2, but not cpu lanes usb ports.

For that we need to disabled following:

Advanced\AMD CBS\FCH Common Options\USB Configuration Options ..

then turn USB 3 to disabled. Then cpu lane usb 3 turn into usb 2.