Dahua DHI-NVR58A16-16P-4KS2-6T NVR 16CH POE 4K 6TB Series: Pro Series Network Interface: 1 x RJ-45 port (10/100/1000Mbps) 16 x PoE ports (IEEE802.3af/at) Audio Input: 1 x RCA Compression Format: H.265/H.264/MJPEG/MPEG4 Processor: Quad-core embedded processor Operating System: Embedded LINUX Power Supply: Single, AC 100~240V, 50/60 Hz NVR: 17.5W (without HDD) PoE: Max 25.5W for single port, 150W in total Temperature: -10 degree C~+55 degree C