need some humminbird cable help please

upgraded to a helix 7 si g3n at the bow.&nbsp; previous configuration was a 798 at the bow connected thru an inter-link to a 797. When I moved the 798 to the console, I assumed it was just a matter of taking the COM cable coming from the bow unit off the inter-link and connect it directly into the console unit, but the plug gender is wrong. Looked at Humminbirds cables on the internet and don't see an adapter. I should add that I installed the ethernet cable with the two dongles.&nbsp; So I guess my question is what do I do with the COM cable?&nbsp; Wondering if I need it with an ethernet setup? thanks&nbsp;<br>