GMS 10 Networking Port Expander, Garmin, Mfr#: 0100035100

Connects multiple chartplotters and sensors over the Garmin Marine Network. 100 MB switch, you can connect multiple MFDs and sensors to the Garmin Marine Network and gain the benefit of Ethernet-like data transfer speeds up to 10 times faster than some competitive systems. The GMS 10 and the Garmin Marine Network are completely plug-and-play. Easily expands your system using the same standard data cable to plug additional units and displays into the GMS 10 network ports. Waterproof.