AB350 Pro4, many USB ports don't work, Windows 7
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=9716
Printed Date: 18 Jul 2025 at 3:35pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AB350 Pro4, many USB ports don't work, Windows 7
Posted By: swarrley
Subject: AB350 Pro4, many USB ports don't work, Windows 7
Date Posted: 19 Sep 2018 at 9:09am
I have installed Windows 7 on a Samsung 960 EVO M.2 NVMe drive on an AB350 Pro4 with Ryzen 5 2600 with a degree of difficulty. It took me some time to get everything working as it should be, but I'm stuck on the USB ports.
Many of the USB ports aren't recognized by Windows 7 Device Manager. I have been able to get USB3_12 (#8 on pg 8 of manual) and USB3_34 (#7 on pg 8 of manual) to work.
USB12 (#1 on pg 8 of manual) doesn't work
USB31_TA_1 (#9 on pg 8 of manual) doesn't work
USB_1_2 (#21 on pg 7 of manual) doesn't work (USB header for front case ports)
USB3_5_6 (#8 on pg 7 of manual) doesn't work (USB 3 header for front cast port)
I haven't tested USB31_TC_1 because I haven't had reason to use a Type-C connection.
I've spent a good amount of time looking for answers online, but they all seem to point to having problems installing Windows 7, but it's been installed. Everything is working fine except for these USB ports.
I'm getting close to throwing in the towel and buying a PCIe USB card, but I'm hoping to get some help here.
Thanks in advance for any ideas.
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Replies:
Posted By: swarrley
Date Posted: 19 Sep 2018 at 9:19am
Posted By: OMGitsShan
Date Posted: 21 Sep 2018 at 1:24am
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If you read the FAQ for the motherboard page, you will see that it says Windows 7 isn't supported with Ryzen CPUs due to the fact that USB ports wont work because of the architecture. It mentions that you can get Windows 7 installed, but the USB ports not working will be one of the trade-offs. This is nothing to do with ASRock - it is just that the new Ryzen CPUs handle stuff differently to CPUs that work with Windows 7. If there isn't a valid reason that you need to be on Windows 7, then I suggest you install Windows 10 and get full use of all your current USB ports without having to buy a new card.
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