Dahua DHI-NVR42A16-16P-4T PoE Network Video Recorder (16-Channel, 1U) 4TB Series: Lite Series Network Interface: 1 x RJ-45 port (10/100/1000Mbps) 16 x PoE ports (IEEE802.3at/af) Audio Input: 1 x RCA Compression Format: H.264/MJPEG Processor: Dual-core embedded processor Operating System: Embedded LINUX Power Supply: Single, AC 100~240V, 47/63 Hz NVR: Temperature: -10 degree C~+55 degree C