Noted: This PL2303 USB TO TTL cable, using the original PL2303 chip, is used to solve some application or computer device compatibility problems. It cannot install the latest version of the driver, installing the latest driver will prompt "PL2303HXA has been discontinued since 2012, please contact the supplier." If you need to use under win10 system. Please install the driver 3.4.25. Have tested, and do not update the driver. Driver download link: https://github.com/xiuhui-wang/PL2303_Prolific_DriverInstaller_v3.4.25