Because this device relies on older USB architectures, it is important to align your expectations with its hardware limitations:
The USB device with and Product ID (PID) 9900 is identified as a Corechip SR9900 USB 2.0 to Fast Ethernet Adapter .
Is the device showing up under or Other devices ? What error message or status code does the system report? usb vid-0fe6 amp-pid-9900
When you see USB\VID_0FE6&PID_9900 , your system is communicating with a controller. These budget-friendly microchips are widely used in unbranded, white-label USB-to-Ethernet dongles, network adapters, and multi-port USB hubs sold across major e-commerce platforms. Technical Specifications of the Corechip SR9900
[ 11:52:52 2021] usb 1-1: New USB device found, idVendor=0fe6, idProduct=9900, bcdDevice=20.00 [ 11:52:52 2021] usb 1-1: Product: 10/100M LAN [ 11:52:52 2021] usb 1-1: Manufacturer: CoreChips Because this device relies on older USB architectures,
Open , right-click the problematic device, and choose Update driver . Select Browse my computer for drivers .
Search online for a reputable driver repository or the device manufacturer's website to download the . When you see USB\VID_0FE6&PID_9900 , your system is
Look under for anything labeled CoreChip , SR9900 , or Asix . Check the box and click Download and install . Step 2: Manually Download the CoreChip SR9900 Driver