Universal 3Pin Connect Cable for X431 IV/DIAGUN III/X431 PAD /X431 iDiag
It is OBDI to OBD2 connectors for X431 iDiag series, the software you purchased from DBSCAR website supports old car models, but the X431 iDiag main unt is only OBD2. So if you want to do car models older than 1996 year, you will need this connector set package.
It is available for these X431 iDiag Device on UOBD2: X431 iDiag Seies. After you buy these connectors, X431 idiag is more powerful, it is like one X431 Diagun III.