Support Ultra 265/H.265/H.264 video formats 16/32/64‑channel input Support mainstream cameras of ONVIF conformance(Profile S, Profile G, Profile T ) and RTSP protocols VGA and HDMI independent output (NVR508‑64B simultaneous output by default , independent output configurable) Up to 16 Megapixels resolution recording Support N+1 Hot spare ANR technology to enhance the storage reliability when the network is disconnected Support cloud upgrade