Hikvision Digital Technology DS-7816NXI-I2/16P/S(C). Video input channels: 16 channels, Maximum resolution: 3840 x 2160 pixels, Supported resolutions: 3840 × 2160, 2560 × 1440, 1920 × 1080, 1600 × 1200, 1280 × 1024, 1280 × 720, 1024 × 768. Maximum storage capacity: 20 TB, HDD interface: SATA, SATA II, SATA III. Ethernet LAN data rates: 10,100,1000 Mbit/s, Networking standards: IEEE 802.3af, IEEE 802.3at, Supported network protocols: TCP/IP, DHCP, IPv4, IPv6, DNS, DDNS, NTP, RTSP, SADP, SMTP, SNMP, NFS, iSCSI, ISUP, UPnP, HTTP,.... Rack capacity: 1U, Product colour: Black, Certification: FCC 15 B, ANSI C63.4-2014 CE EN 55032:2015, EN 61000-3-2, EN 61000-3-3, EN 50130-4. Power consumption (typical): 15 W, AC input voltage: 100-240 V, AC input frequency: 50-60 Hz