Dahua 16 Channel 2HDD 1U Network Video Recorder (NVR5216-EI) - Face Detection, Face Recognition, Perimeter Protection, Supported Resolution: up to 1080p, Storage: 2 x SATA Bays supporting up to 20TB each, Connectivity: 1 x Audio In, 1 x Audio Out, 1 x RS-232, 1 x RS-485, 1 x USB 2.0, 1 x USB 3.0, 1 x HDMI, 1 x VGA, 10/100/1000Mbps RJ-45 Ethernet, Power Supply: 12 VDC, 4 A, Weight: 1.57kg, 1U Rackmountable