This cable allows you to update the firmware on the VMU S1 unit, and convert the VMU S2/OBD2  to a fully featured PC-Baed diagnostic scanner.

This is a special USB cable which manages the USB signal to TTL logic level conversion and connects to the back of the VMU S1 and VMU S2.

Transform your VMU S2/OBD2 computer to a full diagnostic scanner with this cable and your favourite OBD2/ELM327 compliant software package! Many packages are available, some of which are completely free (search for free OBD2 software).