OBD2 Standard cars since 1996 to now in US market. Such as Ford,toyota, GMC,GMC,Chevy,BMW,Benz etc. In HD OBD mode, included OBD2 cars, included automotives,that supports 6Pin 9Pin plug. BobCat, Case, Caterpillar, Komatsu, Terex ( J1938, J1708 protocol );.