USB 3.0 Gigabit Ethernet adapter not connecting at USB3.0 speeds

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  1. Posts : 5,025
    Windows 10/11 Pro x64, Various Linux Builds, Networking, Storage, Cybersecurity Specialty.

    FYI -

    First, check the physical ports on your computer - USB 3.0 ports are sometimes (but not always) blue in color so if any of your USB ports are blue then your computer is equipped with USB 3.0.
    You can also check the logo above the port for the USB 3.0 SuperSpeed logo (pictured below.)

    The USB 3.0 SuperSpeed logo

    If you are still not sure if your PC has USB 3.0 ports, the next place to check is Device Manager. To access Device Manager click on the Start menu and open Control Panel. In Control Panel, click 'Hardware and Sound' and then 'Device Manager'. Scroll down until you see 'Universal Serial Bus Controllers' and expand that section - if you see any items with 'USB 3.0' or 'xHCI' in the title then your PC is equipped with USB 3.0.

    If you do not see any items with 'USB 3.0' in the title then your PC is not equipped with USB 3.0.


      My Computer

  2. Posts : 18,453
    Windows 11 Pro

    Since the adapter is connecting at 100Mbps rather than at 1Gbps I would stop obsessing over the USB speed and start looking at the physical ethernet connection.
      My Computer


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