New VAG-COM Tacho 2.5 USB to OBD-II Interface Cable Transmission Protocol - Cost Effective DIY Tools This VAG-COM Tacho 2.5 USB to OBD-II interface cable is used for reading data from other cars. This car diagnostics USB to 16PIN OBD-II cable allows you to read/write EEPROM programming. Use your computer and this USB enabled VAG-COM interface cable. You can instantly modify certain settings and clear errors in your vehicle. This model supports VDO SEED-KEY protected dashboards so you can read the Immobilizer PIN code.