Keep an accurate record of your cars history on your computer with the obd ii usb pc interface set the set is perfect for checking your cars health and accurately diagnosing any problems modern cars have a built in diagnostic system called obdii or eobd which your garage will plug in to help determine any faults with the obd ii usb pc interface set you can now plug into this system yourself it is perfect for determining what is really wrong with your car before taking it to the garag