If you meant to attach a photo, it did not come through.
Generally the benefit of the mesh systems is that you plug one module directly into your router and the others will connect wirelessly to that one to extend your coverage. So you don't need to worry about anything except a wall outlet for power for the remote modules.
Without photos it's impossible to say what all might be hooked up to your router. How many wifi pods do you have currently, and do they all have an ethernet connection to your router, or just one?