The VAG-diagnosticsystem consist of an adapter and software. The adapter take cares the communication between the car and computer.
When you connect your vehicle with within between the adapter to a pc do you have the disposal of a professional diagnosticsystem.
The software consist of the diagnostic program from VAG-COM developted by the American Company Ross-Tech. This program makes the electronic diagnosis possible on bases of the VAG-diagnostic protocol to all cars of the VAG-concern(VW, Audi, SEAT en Skoda).
Here can you see the software and interface connected to my car