For Humminbird APEX, SOLIX & Onix Models AS EC 20E 8-pin Ethernet Cable 720073-3
(3) All APEX, SOLIX and ONIX models. Part No.: 720073-3；Length: 20 Feet; AS EC 20E; Use AS ECX 30E for cable extension. 1 x 720073-3 AS EC 20E 20’ Ethernet Cable (female end to female end). The 720073-3 is essential for your fishing trip.