Apen Mini Elm327 USB Interface ObdII 2 Auto Scanner Tool Diagnostic Code V1.5 Mini Elm327 USB Interface Obdii 2 Auto Scanner Tool Diagnostic Code V2.2 USB ELM327 V1.5 OBD2 Diagnostic Scan It supports all OBD-II protocols Retrieve Fault Codes (DTCs) and clear Check Engine lights Support New Style Chip with Power-saving Mode