For three evenings, Leo fought it.
Leo unplugged the 50-foot ethernet cable. He coiled it neatly and put it in a drawer. His wife walked by and paused.
: You can try to update it manually by right-clicking the device in Device Manager and selecting "Update driver" > "Search automatically for drivers". Technical Details Hardware ID : USB\VID_0BDA&PID_B711 .
If you have purchased a cheap, no-brand USB Wi-Fi adapter from online marketplaces (often costing under $10), there is a high probability it contains the Realtek 8188GU chip.
If your Realtek 8188GU still isn't working after this guide:
Support is limited for newer macOS versions (Catalina and later).