: Drivers are available for Windows 7, 8, 8.1, 10, and 11. Many modern systems (Windows 10/11) may attempt to install these automatically via Windows Update.
The USB device with and PID 9900 is commonly identified as a Corechip Semiconductor USB-to-Ethernet adapter or a generic "USB 2.0 10/100M Ethernet Adapter." Identifying the Hardware
A Vendor ID (VID) and Product ID (PID) are 16-bit values assigned to a device by the manufacturer. The VID is a unique identifier assigned to a company by the USB Implementers Forum (USB-IF), while the PID is a unique identifier for a specific product from that company. The combination of VID and PID allows the operating system to identify and differentiate between various devices.
It’s frequently used with slim laptops (like the Lenovo IdeaPad or ASUS VivoBook ) that lack a built-in LAN port, as well as Nintendo Switches, Raspberry Pis, and Android TV boxes. usb vid-0fe6 amp-pid-9900
Assigns the specific configuration to the SR9900 Fast Ethernet architecture.
: While the VID/PID points to Corechip, the physical dongle might be marketed under various generic brand names found on Amazon or eBay. Driver & Compatibility
These adapters are known for being budget-friendly but may experience higher CPU overhead than premium brands like Realtek or ASIX. They are ideal for steady 100 Mbps connections but are not suitable for Gigabit-speed environments. Linux usb.ids # Vendors, devices and interfaces. Please keep sorted. List of USB ID's by Stephen J. Gowdy - USBDev.ru : Drivers are available for Windows 7, 8, 8
Apple does not include a native driver for this chip. Third-party options exist but are increasingly unreliable on modern macOS versions (Ventura, Sonoma, Sequoia).
: A surprising but common fix is simply turning off the computer's Wi-Fi. At least one user reported that having Wi-Fi enabled while using this USB ethernet adapter caused conflicts, and disabling Wi-Fi resolved the random disconnections completely. This is a simple and effective first troubleshooting step.
Remember the golden rule of USB troubleshooting: . Next time you see a yellow exclamation mark, you will know exactly where to start. The VID is a unique identifier assigned to
Right-click your USB Ethernet adapter and select . Go to the Power Management tab.
The primary function of this device is to provide a wired internet connection to a computer that might otherwise rely only on Wi-Fi. This makes it an extremely useful and common accessory for modern laptops and mini-PCs.