If you have a ANNKE PoE NVR(N48PAW/N46PCK/N88PCH/N96PBD), you can realize data & power transmission via PoE. When connecting the to NVR, it takes up only ONE channel. It recorders longer videos, a 80% increase in storage than H.264 coding, and provides smooth 4K stream without using all the data while keeping vivid image quality.
eBay