Hello Dan--similar question as Mel--have three poe cameras out on a long run--using a poe switch to pwr the cams then a single cable to the nvr--can i run this cable into one poe port on the nvr---or run the single into a simple switch and then 2 cables to two different ports on the nvr--i cant seem to get the idea of what happens when you mix 'boxes'--Thank You--HH