Click the button and choose the folder where you extracted the CH9200 files. Make sure the box for Include subfolders is checked.

Windows 10 often fails to find this driver automatically. Use these reliable sources to get the correct files:

Sometimes, specific ports—especially USB 3.0 ports on older adapters—can cause issues. Switch to a USB 2.0 port if available. Summary Table: CH9200 Driver Information Manufacturer WCH (Qinheng Electronics) Chip Model Go to product viewer dialog for this item. (USB to Fast Ethernet) Supported OS Windows 10 (32/64-bit), 8.1, 8, 7, XP Driver Type Network Adapter Driver Key Capability 10/100 Mbps Ethernet over USB 2.0