... COM is a PC based diagnostic program for OPEL CARS, support CAN BUS OP-COM CAN BUS INTERFACE For more details ... covers almost all Opel cars, even new cars with CAN-BUS based diagnostic, such as Vectra-C, Astra-H, Zafira- ... Control Unit, just to name a few examples.The diagnostic inteface is USB port based, so there will be ... serial or USB port based standard interfaces (K, KKL, etc)cannot be used!