Don't Spend almost $350.00 on Garmin's GMS 10 Network Port Expander. You can build it yourself for only $110.00. With this you can view every transducer from any fishfinder on your boat.
Here's the DIY Parts List:

TP-Link Litewave 5 Port Gigabit Ethernet Switch https://amzn.to/33aoNMA
DC Adjustable Step Down Voltage Regulator https://amzn.to/34GilNA
IP67 ABS Plastic Junction Box https://amzn.to/3LgZPMu
Waterproof Adjustable 3-16mm Cable Connectors https://amzn.to/3gAHQ5u
Cat 7 Outdoor Ethernet Cable 20 ft https://amzn.to/3J9yav3
Cat 7 Outdoor Ethernet Cable 6 ft https://amzn.to/3HHKpPu
Garmin Marine network cable connector 2-pack https://amzn.to/3GzBPAE

Or have Garmin do it for you for a whole lot more money.

Garmin GMS 10 Network Port Expander https://amzn.to/3B55EIg
Garmin 20 FT Marine Network Cable https://amzn.to/3HzFM9L
Garmin 6FT Marine Network Cable https://amzn.to/3ovYYxM