The Silver collared end will plug into your NBTmarine MFD, the black cable end with the MICRO USB will plug into your USB OTG port on compatible graph/unit.
Ensure that the Flat side of the MICRO USB cable end is to the top of your compatible graph/unit. It will slide loosely into the port and require 8 turns to get snug and seated correctly. If it goes in the port hard and only tightness 2 tunes you have installed the plug upside down.
