The chip uses the legacy USB 2.0 bus, which shares bandwidth with all USB devices on the same controller. On Windows 11, background system telemetry can also consume small amounts of CPU time that this older chip lacks.
If you are using the adapter for gaming, 4K streaming, or large file transfers on Windows 11, consider upgrading to a USB 3.0 Gigabit adapter (Chipset: Realtek RTL8153 or ASIX AX88179). They cost $15–$20 and require zero manual driver installation on Windows 11. Frequently Asked Questions (FAQ) Q: Does Windows 11 automatically install the VK-QF9700 driver? A: No. Unlike Windows 10 (which sometimes installs a generic driver), Windows 11 does not natively support the VK-QF9700 via Windows Update. You must manually install the driver using the steps above. Q: Will this driver work on Windows 11 ARM64 (Surface Pro X, etc.)? A: Very unlikely. The VIA QF9700 driver is compiled for x86/x64 architecture. ARM-based Windows 11 laptops will not run this legacy driver. You will need a modern ARM-compatible USB Ethernet adapter. Q: Is the VK-QF9700 safe to use on Windows 11 (security risks)? A: The driver is over a decade old. While it does not contain known malware, it has not received security updates for DMA (Direct Memory Access) vulnerabilities. Strictly use this adapter on a trusted local network, never on a public or corporate network that enures modern security protocols. Q: Why does my VK-QF9700 work on Linux but not Windows 11? A: The Linux kernel includes an open-source, updated driver ( qf9700.c ) that is actively maintained. Microsoft locks down legacy drivers, requiring manual workarounds. Conclusion Getting the VK-QF9700 driver to work on Windows 11 is a battle against time and deprecated code. It is possible, but it requires patience, manual INF installation, and disabling driver signature enforcement. vk-qf9700 driver windows 11
| Connection Type | Theoretical Max | Real-World Speed | | :--- | :--- | :--- | | USB 2.0 (QF9700) | 100 Mbps | 85 - 95 Mbps | | USB 3.0 Gigabit adapter | 1000 Mbps | 300 - 940 Mbps | The chip uses the legacy USB 2
The is a popular, cost-effective chipset used in countless generic USB-to-Ethernet adapters. While these adapters work "out of the box" on older versions of Windows (like Windows 7 and 8), users upgrading to Windows 11 frequently encounter a frustrating problem: the green link light turns on, but Windows shows "No Internet" or "Unidentified Network." They cost $15–$20 and require zero manual driver
Check Device Manager for yellow triangles and search for the specific error code (e.g., Code 10, 31, 52) to refine your troubleshooting further.