: Default Windows drivers might be insufficient for some hardware revisions; installing the specific OEM driver is recommended. Check Hardware IDs : Ensure your driver matches the hardware ID (typically USB\VID_1A86&PID_E092 Network Reset
The CH9200 is a chip. It cannot achieve Gigabit speeds. If you see slower speeds (e.g., 30-50 Mbps), check your USB port—use a USB 2.0 or USB 3.0 port for best results. Also, try a different Ethernet cable.
Let us be honest: The CH9200 is a legacy chip. It was designed for Windows 7. While it can work on Windows 11, the experience is fraught with security overrides, low speeds, and potential instability.
The manufacturer, WCH, periodically updates its drivers. Follow this process carefully.