Garmin GMS 10 Network Port Expander. The GMS 10 Network Port Expander lets you connect multiple chartplotters and sensors to the Garmin Marine Network. This rugged 100 MB switch lets you connect multiple MFDs and sensors to the Garmin Marine Network and benefit from Ethernet-like data transfer speeds that are up to 10 times faster than some competing systems.
The Garmin GMS 10 and the Garmin Marine Network are completely plug-and-play, meaning all peripherals are automatically detected and easily accessible once connected to the network. Likewise, you can easily expand your system using the same standard data cable to connect additional units and displays to the GMS 10 network ports.
The robust GMS 10 is specially designed to withstand corrosive sea waters. All connections are completely waterproof and sealed covers keep harmful moisture away from unused data ports.