The Ethernet Cable is a 15' cable that allows the connection of two Ethernet capable units to be connected. Features Shared Information; GPS; Waypoints, routes, tracks and position. You cannot share mapping; Auxiliary Temperature; Auxiliary Speed; Sonar Units can only share information on sonar from the lowest featured model and only like frequencies. Below are examples of what will not share. See the Specs section for detailed information. Side Imaging sonar will not share Side Imaging sonar/views with a non-side imaging unit. Down Imaging sonar from a Side Imaging unit will not share with a Down Imaging unit. Down Imaging sonar from a Down Imaging unit will not share with a standard sonar unit. Down Imaging sonar from a Down Imaging unit will not share with a Side Imaging unit.; What will share? Side Imaging and Down Imaging sonar from a Side Imaging unit will share Side Imaging and Down Imaging sonar with another Side Imaging unit. Down Imaging sonar from a Down Imaging unit will share Down Imaging sonar with another Down Imaging unit.