Visit the official WCH download page at: www.wch.cn/downloads/CH9200EVT.html (use browser translation if needed).

The folder should contain:

Click the button, navigate to the extracted folder containing the CH9200 files, and click Next . Windows 10 will scan the directory, locate the .inf configuration file, and install the network driver. Step 7: Verify Installation

for Windows 10 is a straightforward process, though it often requires a manual touch if your system doesn't auto-recognize the device. Since this chip is manufactured by Qinheng Electronics (WCH)

This usually means the driver wasn't installed properly. The most reliable fix is to uninstall any existing problematic driver and let Windows find a fresh one.

The CH9200 is a cost-effective chipset manufactured by QinHeng Electronics (WCH). It converts a USB 1.1 or USB 2.0 interface into a 10/100 Mbps Fast Ethernet connection.

What (like Code 10 or Code 28) does the Device Manager show? Is your Windows 10 system 32-bit or 64-bit ? Did your adapter come with a physical driver mini-CD ? Share public link

If the .exe file fails, open Device Manager, right-click the device, choose "Update Driver" -> "Browse my computer for drivers" and point to the folder where you extracted the driver files.

DHCP failure or IP conflict. Solution: