Basically, it is for when the fish finder setup is ready to talk, but the cable needs to reach across the boat first.

Features:

• Compatible replacement for Humminbird 720073-4 AS EC 30E
• 30 ft cable length
• Female-to-female Ethernet cable
• Designed for compatible Humminbird marine electronics
• Can connect two Ethernet-enabled devices
• Can connect a compatible control head to an AS ETH 5PXG Ethernet switch
• Black round cable
• Rubber outer material
• Copper cable construction listed by source
• Designed for indoor and outdoor marine electronics use

Compatibility:
Compatible with select Humminbird models and series, including:

• SOLIX Series
• HELIX G2N Series
• HELIX G1 9, 10, and 12 models
• ONIX Series
• ION Series
• 1100 Series
• 900 Series
• 800 Series
• 700 Series

Details:

• Brand: yourour
• Model: 720073-4
• Part Number: YR-720073-4
• Cable Type: Ethernet
• Cable Length: 30 ft
• Connector Gender: Female to female
• Connector Type: RJ45 listed by source
• Ethernet Category: Cat 5e
• Recommended Use: Marine electronics and fish finder connections
• Color: Black
• Outer Material: Rubber
• Item Weight: approx. 0.58 kg
• ASIN: B0DB5L5Q1P

Includes:

• 1 30 ft 720073-4 AS EC 30E Ethernet cable
• Manual if included in packaging

Important:
Compatible replacement cable, not OEM. Please verify your Humminbird model, network setup, cable length, and connector type before ordering. This is an Ethernet network cable for compatible Humminbird systems, not a transducer extension cable.