Features & description: M12 8Pin A-Coding Male to Female Straight Connector,Degree of protection up to IP67 for safe use in harsh environment; Screw-lock structure ensure reliability and stability in application, good shock resistance performance; It is good connection to extending Hummingbird Helix 10 G2N to 2021 Minn Kota terrova.communication between Humminbird fishfinders and Minn Kota i-Pilot through ethernet link.Compatible with: AS EC 5E, AS EC 10E, AS EC 15E, AS EC 20E, AS EC 30E Cable Length：75CM/1M /3M/5M/8M/10M available(other length you need,you can contact us to customize.) Aviation 8pin male to female Cable for Topping A90D pre-amp and the Topping EXT90 extension unit.