Dahua 16 Channel Penta-brid 5M-N/1080p Cooper 1U 1HDD WizSense Digital Video Recorder (DH-XVR1B16-I) - Main Processor: Industrial-grade processor, Analog Camera Input: 16 channels, BNC: adaptive access by default; HDCVI, AHD, TVI and CVBS access can be configured., Ports: Audio Input: 1-channel RCA, 16-channel BNC (Coaxial Audio), Audio Output: 1-channel RCA, Two-way Talk, HDD Interface: 1 SATA port, up to 16 TB. The maximum HDD capacity varies with environment temperature., USB: 2 USB ports (USB 2.0), 2 USB ports (USB 2.0): x1, VGA: x1, Network Port: 1 (10/100 Mbps Ethernet port, RJ-45), Audio and Video: Video Output: 1 x HDMI, 1 x VGA, OS: Embedded Linux