Originally Posted by BruceB
Is the Lowrance black connector the same as the red network connection?
The difference is size. Lowrance started with a large size connector on the LGC-2000 (about 3/4" in diameter), and changed to the small industry standard connector (about 3/16" diameter) with the LGC-3000 and up. They used to color code them (blue was large, red was small); other manufacturers don't adhere to the color code (black, silver, whatever.)
The large connector will work with a small connector network (and vice versa) with an adaptor.