I am looking to purchase a Dahua NVR5216-16P-4KS2E v2.0 16 channel with 16 poe ports built in. I have 2 ip cameras on my home network. My question is when I plug the NVR into my home network can I configure the NVR to see the cameras, that are on my home network with out using a poe port. Is my first time working with this kind of camera system. Thanks