This device allows you to datalog your Honda ECU using USB as your PC interface. This is a highly recomended item for eCtune users as it is what you need to enable real-time datalogging and map tracing.

Comes with converter box, USB cable, 4-pin latching CN2 port header, and a cable to go from the box to your 4-pin header on the ECU. Check the documentation section for an installation guide.