The JL Audio 6' Powered Network Cable (MMC-PN2K-6) is designed to connect a compatible MediaMaster source unit with a MediaMaster MMR-40 NMEA 2000 Network Controller or compatible Multi-Function Display (MFD). This cable creates an isolated, stand-alone NMEA 2000 network for seamless communication between devices. Note: Does not support more than two NMEA 2000 devices requires a genuine NMEA 2000 network for additional devices.• 6' length for easy connection• Supports two NMEA 2000 devices (one source unit, one controller/display)• Isolated, stand-alone NMEA 2000 network• Adapter needed for MM100s (MMC-DN2K-1 or MMC-DN2K-6) | JL Audio 6' Powered Network Cable f/ Connection of Compatible NMEA 2000 MediaMaster