The CAB-000863 Powered NMEA 2000 drop cable is required when connecting the MS-RA205 to an existing NMEA 2000 network. Once connected the MS-RA205 will communicate with any MS-NRX200i remotes or FUSION-Link Multi-Function Displays connected to the same network. The CAB-000863 is not included with the MS-RA205, please contact