The one in the controller...........the menu says "open mass storage" which "I guess" is what they are targeting. Also I installed the laptop software and the so called "K line adapter driver" but so far have seemingly not been able to connect (the laptop) to the ECU
The controller to ECU seems to work fine Bear in mind this is not in a car. It's all connected on the bench (no distributor) with a 14V bench supply