I have a weird USB 3.0 port issue


  1. JohnnyGui
    Posts : 533
    Windows 10 Pro x64 Version 21H2
       New #1

    USB 3.0 not backwards compatible anymore?


    I replaced my front panel because of a malfunctioning audio jack. It's the same model and I connected the wires to the same headers on the motherboard. The panel has two USB 3.0 and two USB 2.0 ports.

    All of the USB ports of my older panel were working fine and were backwards compatible.

    However, now one of the USB 3.0 ports is not backwards compatible; it only works when connecting USB 3.0 devices. When connecting several USB 2.0 devices, a pop appears saying Windows can't recognise this device. The other USB 3.0 port is working fine for both USB 3.0 and 2.0 devices. Both USB 2.0 ports also work fine.
    I have checked the USB header; no pins damaged. Both USB 3.0 ports share one header so it seems unlikely that this could be a hardware damage since one USB 3.0 port is working fine.

    When looking in Device Manager I can see one USB 3.0 port is called Intel(R) USB 3.0 eXtensible Host Controller - 1.0 (Microsoft). The other USB 3.0 port is called USB - Root Hub (USB 3.0). There is no yellow bang. My Gigabyte Z370 motherboard support page is not showing any USB drivers and I've already tried install the latest chipset drivers.

    What is the culprit here? Did Windows install a new particular driver when I replaced my front panel?
    Last edited by JohnnyGui; 05 Mar 2022 at 20:14.
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  3. hsehestedt
    Posts : 4,188
    Windows 11 Pro, 22H2
       New #2

    If there are 2 separate cables to these USB 3 ports, try swapping them on the Motherboard. If the problem moves with the cable swap, then it would indicate a problem with that cable or physical port.
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