The MKA-47 is fantastic! I Guide and sometimes need to swap out my Terrova for the ForTrex. I can swap them out in about 10 minutes.

You will also need the Humminbird AS ES QDE (Ethernet Dongle) and an Ethernet cable for each unit you are trying to connect to the Ethernet Hub.

Humminbird Ethernet Dongle 700 Quick Disconnect Adapter Cable for 700, 800, 900 & 1100 Series | Bass Pro Shops