Dahua DHI-NVR58A32-4KS2-2T NVR 32CH 4K 2TB Series: Pro Series Network Interface: 2 x RJ-45 port (10/100/1000Mbps) 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: 16.7W (without HDD) Temperature: -10 degree C~+55 degree C