I'm looking at this NVR to replace the suck EZViz one I have now, and although I only have eight cameras, I like the idea of being able to expand if needed.
I understand this is a Dahua and looking at the picture of the back of the unit it seems that only 8 of 16 jacks are POE. So what powers the others? What are the other ports doing?

I understand this is a Dahua and looking at the picture of the back of the unit it seems that only 8 of 16 jacks are POE. So what powers the others? What are the other ports doing?

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