Garmin GMS10 Network Port ExpanderThe Garmin GMS10 Network Port Expander extends your onboard Garmin Marine Network with a rugged 100 MB switch that links multiple chartplotters and sensors for fast, reliable data sharing. Its designed for plug and play use, so peripherals are automatically detected and ready to access as soon as theyre connected. Plug and play on Garmin Marine Network: All peripherals are automatically detected and readily accessible as soon as theyre connected. High