Product details: Name: Car diagnostic tool Model: Green Dog V1.2114, Green Dog V1.2111, Green Dog V1.2067 Color: Green Features: Widely used in vehicle fault diagnosis, OBD (on-board diagnostic) system detection, and vehicle fault code reading and clearing. 1. Install the driver software 2. Select "No" for whether the device is upgraded (vehicle upgrade is not allowed, otherwise the chip will be damaged) 3. After the installation is complete, it is best to disconnect the network and connect the device. 4. Open the software and select the corresponding ecu module for reading Product includes: 1*Car diagnostic tool Note: Please allow slight size errors (1~2 cm/0.39~0.78 inches) due to manual measurement, which shall prevail in actual receipt; please allow slight color errors under different monitors.