720074-12 AS EC QDE Ethernet Dongle Adapter Cable for Humminbird

In this review of the 720074-12 AS EC QDE Ethernet Dongle Adapter Cable, the bottom line is simple: this is a practical, no-frills connectivity solution for anglers who want to network Humminbird fishfinders and i-Pilot Link or One-Boat Network trolling motors. The reviewer found the two-piece pack useful for linking HELIX and SOLIX series units, enabling waypoint sharing and live sonar streaming. It is intended for boat owners who need a durable, marine-grade adapter to keep devices talking without dealing with proprietary or fiddly connectors.

Key Features

• Advanced Compatibility: Works with Humminbird HELIX 7, 8, 9, 10, 12, 15 and SOLIX G2N/G3N/G4N models to provide a direct network link between fishfinders and compatible trolling motors.
• Enhanced Functionality: Enables waypoint sharing and synchronized control so the fishfinder can manage i-Pilot Link features like route tracking and spot lock from the display.
• Live Sonar Streaming: Allows real-time transfer of sonar imaging and GPS data when paired with compatible transducers and devices for a unified boat view.
• Durable Construction: PVC outer jacket and oxygen-free copper conductor deliver water resistance, UV resistance, and low transmission loss for reliable marine performance.
• Interference Protection: Dual-layer shielding with aluminum foil and braided copper reduces electromagnetic interference for stable signal transfer.
• Two-Pack Convenience: Includes two adapter cables, which the manufacturer recommends when networking two fishfinders or setting up a complete motor and sonar link.

Who It's For

The 720074-12 is best for anglers and small-boat owners who use Humminbird HELIX or SOLIX displays and want to expand connectivity to trolling motors, Ethernet accessories, or a second display. It suits those who value playback of live sonar and synchronized waypoint control across devices.

It is less appropriate for people who do not use One-Boat Network or i-Pilot Link systems, or for those who need a multi-function cable with integrated power or proprietary connectors beyond the Ethernet dongle role. For simple transducer-to-display hookups without networking, this adapter is unnecessary.

Pros & Cons

Pros

• Provides a reliable network connection between Humminbird displays and compatible trolling motors for feature sharing.
• Robust materials and dual shielding improve durability and signal stability in marine conditions.
• Enables live sonar streaming and waypoint sharing when combined with compatible devices for a richer fishing setup.
• Sold in a two-pack, which simplifies networking two displays or following the recommended installation layout.

Cons

• Does not supply power or replace an Ethernet cable, so a separate suitable-length Ethernet cable may still be required for full networking.
• Installation guidance is limited to non-professional support from the seller, so professional help may be advisable for complex setups.

Specifications

Product Type	Ethernet dongle adapter cable
Compatible Series	Humminbird HELIX and SOLIX (G2N, G3N, G4N)
Pack Quantity	2 pieces
Outer Jacket	PVC (wear-resistant, UV-resistant, waterproof)
Conductor	Oxygen-free copper
Shielding	Dual-layer aluminum foil and braided copper
Primary Uses	Connect fishfinder to trolling motor, network devices, stream sonar

Our Verdict

The 720074-12 AS EC QDE adapter cable is a straightforward, well-built option for anglers who want to network Humminbird HELIX or SOLIX displays with i-Pilot Link or One-Boat Network motors. It delivers the core benefits of waypoint sharing and live sonar streaming with durable construction and solid shielding, making it good value for boat owners setting up reliable device links, provided they plan for any additional Ethernet cable length separately.

Frequently Asked Questions

Do I need one or two cables to network two fishfinders?
For two fishfinders the manufacturer recommends two AS EC QDE cables plus an Ethernet cable of appropriate length to complete the network.

Will this cable power my trolling motor or transducer?
No, this adapter provides data connectivity only; it does not supply power, so separate power connections remain necessary.

Is technical help available if installation is tricky?
Yes, the seller offers installation guidance and non-professional support by email, with responses promised within 24 hours, though qualified technician supervision is suggested for replacements.