SPECIFICATION : Audio Input: 1-ch Video Compression: H.264,H.264+ Analog and HD-TVI video input: 8-ch,BNC interface (1.0Vp-p, 75 Ω)connection Supported camera types: Support HDTVI input: 3 MP, 1080p/25Hz, 1080p/30Hz, 720p/25Hz, 720p/30Hz, 720P/50Hz, 720p/60Hz Note: The 3 MP signal input is only available for the first channel of DS-7204HQHI-F1/N, the first 2 channels of DS-7208HQHI-F1/N, and the first 4 channels of DS-7216HQHI-F1/N. Support AHD input: 1080p/25Hz, 1080p/30Hz, 720p/25Hz, 720p/30Hz support CVBS input IP Video Input: 2-ch Up to 2MP resolution Video Input Interface: BNC (1.0 Vp-p, 75Ω) Audio Compression: G.711u Audio Input Interface: RCA (2.0 Vp-p, 1 kΩ) Two-way Audio: 1-ch, RCA (2.0 Vp-p, 1 KΩ) (using audio input) Video/Audio Output CVBS Output: 1-ch,BNC(1.0Vp-p,75Ω),resolution:PAL:704x576,NTSC:704x480 HDMI/VGA Output: 1920 × 1080 / 60 Hz,1280 × 1024 / 60 Hz, 1280 × 720 / 60 Hz, 1024 × 768 / 60 Hz Recording resolution: When 1080p Lite mode not enabled: 3 MP/1080p/720p/VGA/WD1/4CIF/CIF; When 1080p Lite mode enabled: 3 MP/1080p lite/720p/VGA/WD1/4CIF/CIF Frame Rate: Main stream: When 1080p Lite mode not enabled: For 3 MP stream access: 3 MP/1080p/720p/VGA/WD1/4CIF/CIF@12fps For 1080p stream access: 1080p/720p@12fps; VGA/WD1/4CIF/CIF@25fps (P)/30fps (N) For 720p stream access: 720p/VGA/WD1/4CIF/CIF@25fps (P)/30fps (N) When 1080p Lite mode enabled: 3 MP/1080p lite/720p/VGA/WD1/4CIF/CIF@25fps (P)/30fps (N) Video Bit Rate: 32 Kbps-6 Mbps Stream Type: Video/Video&Audio Audio Output: 1-ch RCA(Linear, 1kΩ) Audio Bit Rate: 64kbps Dual Stream: Support Playback Resolution: 3 MP/1080p/720p/VGA/WD1/4CIF/CIF Synchronous Playback: 8-ch Network management Remote connections: 128 Network protocols: TCP/IP, PPPoE, DHCP,Hik Cloud P2P, DNS, DDNS, NTP, SADP, SMTP, NFS, iSCSI, UPnP?, HTTPS,ONVIF Hard Disk Driver Interface Type: 1 SATA Interface Capacity: Up to 6 TB capacity for each disk External Interface Network Interface: 1; 10M / 100M self-adaptive Ethernet interface USB Interface: 2 USB 2.0 Interfaces Serial Interface: 1; standard RS-485 serial interface, half-duplex General Power Supply: 12V DC Consumption: ≤ 20W(without hard disks) Working Temperature: -10 oC ~+55 oC (14 oF ~ 131 oF) Working Humidity: 10% ~ 90% Chassis: Standalone 1U chassis Dimensions: 315 × 242 × 45 mm (12.4 × 9.5 × 1.8 inch) Weight: ≤2 kg(4.4lb)