Dahua DHI-NVR6A16DR-128-4K 128 Channel Super 4K Network Video Recorder Series: Super Series Network Interface: 4 x RJ-45 ports (10/100/1000Mbps) Audio Input: 1 x RCA Compression Format: H.265/H.264/MJPEG Processor: Intel Processors Operating System: LINUX Power Supply: Power Supply: AC100V~240V, 50~60Hz, Redundant Power Consumption: Temperature: -10 degree C~+55 degree C