Shineka ELM327 USB Interface OBD2 OBDII Code Readers Scan Tools Auto Diagnostic Scanner Car Diagnostic Tool Auto Scan Check Engine Light - Supports All OBDII Protocols (ELM327 USB) The latest PC-based scan tool. It supports OBD-II protocols and is dispatched with a number of compatible programs. OBD-II Software is a free program that allows you to use your PC and a hardware interface to get the information from your car's computer. Very user-friendly, easy to learn, and easy to install. The interface is OBD-II. The output protocol (connection to laptop) is USB. The software supports two platforms - DOS and Windows(include Windows 7). Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database).