Version 03.02.07 is best suited for HEX-USB (original) owners running VCDS Release 19.x to 21.x on Windows 7 or 8.
You do not usually need to download the USB library as a standalone file. It is included automatically in the main software installers from Current Full Version : Download from the official Ross-Tech VCDS Download Page : For older "dumb" interfaces, use the VCDS-Lite Download Page Virtual COM Port (VCP) Drivers Vcds Usb Library Version 03.02.07 Download
Ross-Tech maintains a comprehensive download section on their website. While they encourage users to use the latest software (which includes the latest drivers), they often provide legacy drivers for users maintaining older machines or older interfaces. Version 03
Minimizes connection drops while reading fault codes or performing long coding. Where to Download Official Updates While they encourage users to use the latest