Drivers for the UGREEN USB to RS232 (20222) Adapter are below. This cable has a built-in Prolific chipset which is the key to USB to RS232 conversion. Windows, macOS, Linux and Android can use this cable.
Installation on Windows
Download the file: PL23XX_Prolific_DriverInstaller_v206.zip
This file can be extracted using Windows built-in extractor or another tool that you prefer. Once extracted.