Used to interconnect your Garmin Marine Network Components.Compatible with:GMR 1204 xHD Open Array and Pedestal GMR 1206 xHD Open Array and Pedestal GMR 18 GMR 18 HD GMR 21 GMR 24 GMR 24 HD GMR 404 Open Array, GMR 404 Open Array GMR 404 xHD Open Array and Pedestal GMR 404/406 Radar Pedestal GMR 406 Open Array GMR 406 xHD Open Array and Pedestal GMR 41 GMR 604 Open Array Antenna xHD GMR 6kW Pedestal xHD GPSMAP 6212 GPSMAP 7212 GPSMAP 6208 GPSMAP 7215 GSD 24 GSD 26