Humminbird - NMEA 2000 T-Connector - Male - 760038-1. This NMEA 2000 T-connector offers connection between NMEA 2000 drop cables and backbone cables. The couplers connect to the corresponding T-connectors and backbone cables, creating a simplified installation.. Features:. Includes (1) NMEA 2000 T-connector. 1-Year Limited Warranty