Humminbird 700 Ethernet Cable. If you are connecting one 700 HD series product with another 700 HD series product you will require two of these cables. If you are connecting one 700 HD series product with either a 800 900 or 1100 Series product you will only need one of these Humminbird AS EC QDE Ethernet Adapters plus one of the AS EC2 10 20 or 30 foot cables. Specifications for Humminbird 700 Ethernet Adapter Cable: Manufacturer: Humminbird Color: Black Features of Humminbird AS EC QDE Ethernet Adapter Cable: For use with: MS 700E 778c HD 788ci HD Combo 798ci HD SI Combo Package Contents: Humminbird AS EC QDE Ethernet Adapter 7200741 Humminbird 7200741: 700 Ethernet Cable