I may be interested in this. But I must admit, I'm not real versed on this unit, or the whole NVR setup in general. I intend to purchase 8 Dahua HFW2100N cameras, and am running CAT 6 on the outside of my house right before I have new siding installed. I understand that if I only run CAT6 wire, I will need a POE switch to make them work?