Century Accessory ELM327 V1.5 OBDII OBD2 CAN-BUS Car Auto Diagnostic Interface USB Scanner Tool Cable Very user-friendly, easy to learn, and easy to install The processor is an ELM327 The output protocol (connection to laptop) is USB The software supports two platforms - DOS and Windows(not include Windows 7) Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database)