Garmin GMS 10 Network Port ExpanderThe Garmin GMS 10 Network Port Expander is a rugged, plug and play 100 MB switch that expands your Garmin Marine Network by linking multiple chartplotters, MFDs, and sensors with Ethernet like speeds. Designed for demanding marine environments, it enhances reliability and expandability across your on board network. 100 MB switch: High speed expansion to link multiple chartplotters, MFDs, and sensors on the Garmin Marine Network with Ethernet like