Here’s a technical write-up for the USB device with VID 0x0FE6 and PID 0x9900.
(Vendor ID) belongs to Corechip Semiconductor (sometimes listed as ICS Advent in Linux databases). The (Product ID) specifically designates their SR9900 Fast Ethernet controller. usb vid-0fe6 amp-pid-9900
The USB Hardware ID VID 0FE6 & PID 9900 identifies a Corechip SR9900 USB 2.0 to Fast Ethernet Adapter Here’s a technical write-up for the USB device
The hardware identifier USB\VID_0FE6&PID_9900 corresponds to the Corechip SR9900 USB 2.0 to Fast Ethernet Adapter. This compact peripheral allows devices without a built-in Ethernet port to connect to wired networks, providing a more stable connection than Wi-Fi. Device Overview and Technical Specifications usb vid-0fe6 amp-pid-9900
Some users report stability issues, such as the adapter disconnecting during high-bandwidth downloads (>1 MB) or failing to be recognized entirely on low-power devices like the Raspberry Pi Windows Drivers: Drivers are typically provided by the manufacturer (e.g., Driverscape ) under the name RD9700 USB2.0 To Fast Ethernet Adapter Raspberry Pi Forums 4. Usage Considerations
macOS: May require manual driver installation for full 100Mbps throughput, as native support can be inconsistent. Technical Specifications Interface: USB 2.0 (compatible with 1.1/3.0 ports). Speed: 10/100 Mbps (Fast Ethernet). Protocol: Half/Full Duplex 10/100Mbps operation.