Click the , navigate to Settings , and select Windows Update .

Just search for “Realtek USB LAN driver Windows 11” on your preferred manufacturer’s support site. Make sure to download the 64‑bit version.

If there is no executable file and only .inf and .sys files, do this: Open . Right-click your unrecognized USB LAN device. Select Update driver . Choose Browse my computer for drivers .

If you followed the steps above, your E100U should now be working. Enjoy the speed and reliability of a wired Ethernet connection on your Windows 11 computer – whether you’re gaming, streaming, or just trying to get a stable connection where Wi‑Fi fails.

: Connect your PC to the internet (via Wi-Fi), go to Settings > Windows Update , and click Check for Updates . Windows often automatically finds the driver.

If you are searching for the , you have likely noticed that finding official drivers for older or budget-friendly network adapters can be a challenge.