While this plugs into the OBD-II port but the main use is to dump the CAN bus. Comparing it with OBD-II dongles where the functionality is restricted to the OBD

While this plugs into the OBD-II port but the main use is to dump the CAN bus. Comparing it with OBD-II dongles where the functionality is restricted to the OBD part is misleading. It's far from universal, as not all cars expose all the CAN bus at the OBD-II socket, but a good start for sure. I ordered mine.