Allows you to quickly and easily connect up to five Ethernet items. Use it to link multiple Humminbird head units, share transducers, add an NMEA 2000 network or step up to the Humminbird Radar. The purchase of Ethernet cables and the AS EC QDE is required depending on the number of devices you plan to add to this switch and which models. One network can contain up to three AS ETH 5PXG switches daisy chained together. The network is limited to a total of four Humminbird fish finders per network. Compatible with: APEX and SOLIX Series – requires AS EC 5/10/15/20/30E. Compatible with: HELIX 15, 12, 10, 9, 8 Series – requires AS EC 5/10/15/20/30E, plus AS EC QDE. Compatible with: HELIX 7 G2N/G3N/G4N Series – requires AS EC 5/10/15/20/30E, plus AS EC QDE. AS ETH 5PXG.