You can download CH340C USB to UART Drivers from the following link
https://roboindia.com/tutorial-content/drivers/CH341SER.ZIP
After downloading the drivers, open the file on your desktop. Click the “UNINSTALL” button first. Then click on the “INSTALL” button.
After installation is completed, click on “OK”.
Connect ADIY UNO SMD CH340C development board to PC/Laptop through USBB
cable.
Open device manager in your PC/laptop and check ports section. Check and
verify if the board is detected.
When you see the device name (USB-SERIAL CH340) appearing in port section,
drivers are installed successfully.