: The setup information file that tells Windows how to install the driver. CH341SER.SYS : The actual system driver file.
If you plug in a device (like an ) and your computer identifies it as an "Unknown Device" or a "USB2.0-Serial" device with a yellow exclamation mark in the Device Manager, you need these drivers to: Assign a COM Port (e.g., COM3) to the device. Download File CH340_CH341_Drivers.rar
: In the window that appears, click the Install button. : The setup information file that tells Windows
: Use a tool like WinRAR or 7-Zip to extract the files. Run the Setup : Open the folder and run CH341SER.EXE . Download File CH340_CH341_Drivers.rar