DS-7716NI-K4 Specification
Video/Audio input	IP video input: 16-ch Two-way audio: 1-ch, RCA (2.0 Vp-p, 1kΩ)
Network	Incoming bandwidth: 160 Mbps Outgoing bandwidth: 160 Mbps Remote connection: 128
Video/Audio output	Recording resolution: 8MP / 6MP / 5MP / 4MP / 3MP / 1080p / UXGA / 720p / VGA / 4CIF / DCIF / 2CIF / CIF / QCIF   HDMI output resolution: 1-ch, resolution: 4K (3840*2160)/60Hz, 4K (3840*2160)/30Hz, 1920*1080P/60Hz, 1600*1200/60Hz, 1280*1024/60Hz, 1280*720/60Hz, 1024*768/60Hz   VGA output resolution: 1-ch, resolution: 1920*1080P/60Hz, 1280*1024/60Hz, 1280*720/60Hz, 1024*768/60Hz   Audio output: 1-ch, RCA (Linear, 1kΩ)
Decoding	Live view / Playback resolution: 8MP / 6MP / 5MP / 3MP / 1080p / UXGA / 720p / VGA / 4CIF / DCIF / 2CIF / CIF / QCIF   Capability: 8-ch@1080P
Hard disk	SATA: 4 SATA interfaces for 4HDDs Capacity: Up to 6TB capacity for each HDD
External interface	Network interface: 2 RJ-45 10/100/1000 Mbps self-adaptive Ethernet interfaces Serial interface: RS-232; RS-485; USB interface: Front panel: 2 × USB 2.0; Rear panel: 1 × USB 3.0 Alarm in/out: 16/4
General	Power supply: 100 to 240 VAC Power: ≤20 W Consumption (without hard disk): ≤20 W Working temperature: -10 to +55ºC (14 to 131ºF) Working humidity: 10 to 90 % Chassis: 19-inch rack-mounted 1.5U chassis Dimensions (W × D × H): 445 × 390 ×70 mm ( 17.5"× 15.3" × 2.8")