If you have all 5 ports of your Ethernet box filled up..you need to add another eithernet box and pigtail it to both ethernet boxes but only plug in 4 units into each. I added a second eithernet box..and put mega 360 on one…and mega live on the other,,then added 4 Humminbird depthfinders with 2 on each. I don’t have any issues but used a helix 10 for the mega live and a helix 12 for the mega 360 and view them separate. Both are upfront along with a helix 7 for maps and 2/d. I have a 9 on the consol area at back of boat. Everything is networked.