Dahua DHI-NVR4104-W 1 SATA port, up to 4TB 4CH Smart 1U WiFi Network Video Recorder Network Interface: 1 x RJ-45 port (10/100M) Compression Format: H.264 Processor: Dual-core embedded processor Operating System: Embedded LINUX Power Supply: Power Supply : DC 12V / 2A Power Consumption: 10W (without HDD) Temperature: -10 degree C ~ +55 degree C Humidity: 10% ~ 90% RH Dimensions: 1.77 x 8.07 x 8.07