Usb Vid-0fe6 Amp-pid-9900 |link| -
The hardware identifier refers to the Corechip SR9900 USB 2.0 to Fast Ethernet Adapter . This specialized chip is commonly found in budget-friendly USB-to-Ethernet dongles used to add wired network connectivity to laptops, tablets, and desktop computers that lack a built-in RJ45 port. Technical Overview
Troubleshooting checklist
Windows may be cutting power to the USB port to save energy. usb vid-0fe6 amp-pid-9900

