AMD Motherboards - B550m-ITX/ac USB problems

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B550m-ITX/ac USB problems

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=16891
Printed Date: 16 Aug 2025 at 12:58am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B550m-ITX/ac USB problems

Posted By: ronalicious
Subject: B550m-ITX/ac USB problems
Date Posted: 10 Oct 2020 at 7:00am

Hi,

I have this board in a Phanteks Enthoo Evolv. The front two USB ports on the case constantly show the error "Device Descriptor Request Failed" and do not work with any generation of USB.

The rear ports work fine by themselves, but if I attach a hub to them, the USB port is unable to recognize when multiple devices are attached to the hub.

I've tried the fixes listed here, except for removing the power supply - https://www.drivereasy.com/knowledge/solved-unknown-usb-device-device-descriptor-request-failed-for-windows-10/

Any suggestions on how to fix or what to troubleshoot?

Replies:

Posted By: ronalicious
Date Posted: 12 Oct 2020 at 8:24am

bump