If the adapter shows up as an "Unknown Device" or "USB 2.0 10/100M Ethernet Adaptor" in your Device Manager with a yellow exclamation mark, follow these manual installation steps:
| Source | Link / Path | Notes | |--------|-------------|-------| | (Acquired RD9700 IP) | https://www.realtek.com → Search "RD9700" → Download RD9700_USB_LAN_Driver_vX.X.X.zip | Most reliable, digitally signed | | Microsoft Update Catalog | https://www.catalog.update.microsoft.com → Search RD9700 | Signed CAB files for Windows 10/11 | | OEM support (rare) | Check adapter packaging / CD-ROM | Often outdated | If the adapter shows up as an "Unknown Device" or "USB 2