Lowrance Network Expansion

[Scherbacj]

I am trying to figure out how to setup my 2 HDS Pro 10’s with and Elite FS 7 and Active Target 2. Obviously I don’t have enough Ethernet ports to do it without the NEP-2, my question is does it matter where I plug each thing in at on the NEP-2? Why do they put one Ethernet port on one side and 4 on the other? Are the all connected together? Or is the single side the “In” and the other side the “Out”? 
 

My other option would be to hook-up the HDS Pro 10 & Elite FS7 at the Bow along with the Active Target 2, and then have the HDS 10 at the console not connected via Ethernet but still connected via NMEA2000 so it could control the Ghost if needed? Maybe I will try that first before I spend the $300 on the NEP-2 because I doubt I will need to look at AT2 at the console very often. I guess they wouldn’t share waypoints that way, but can’t I save waypoints to the SD Card and transfer them that way? 

[Scherbacj]

I guess I should add, my thinking is that I would use the HDS10 for most things, but when I use the FFS I would put it on the HDS10 and would then use the Elite FS7 for my chart & DI instead of doing a split screen. That way I have the largest view possible for the FFS. 
 

Doing it this way would also allow me to use the HDS10 for DI and use the FS7 for the chart instead of using the split screen.