NMEA2000

The NMEA 2000 connectors are marketed under different names.

Originally it is an M12 5pin connector for NMEA2000 and for water sports it is also called Micro C or N2K connector.

Despite the major external differences, these connectors are still compatible with each other.

Shown above is the large M12 connector (screw version) fitting the small Micro C (solder version)