This a USB adapter cable that is required to convert remote diagnosis head VAS 5054A with Fischer connector (30cm USB cable) or diagnosis interface with Fischer connector to a standard USB.nnAlso used to adapt VAS6154 and VAS6558A and Porsche PIWIS3 PT3G VCI to Diagnostic Tester.nnWarranty 12 monthsnn**Please be noted that you are buying 1PC USB adapter cable ONLY, nor a laptop, nor the OBD2 interface**nnRegarding how the USB adapter works, please refer to https://youtu.be/fS5OxsIMl2Ennany queries please feel free to contact tec at unichip-tec dot com