Hikvision DS-7732NI-I4/16P(B). Video input channels: 32 channels, Maximum resolution: 3840 x 2160 pixels, Number of simultaneously playbacked channels: 16 channels. Maximum storage capacity: 10 TB, HDD interface: SATA. Ethernet LAN data rates: 10,100 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: 1.5U, Product color: Black, Silver, Compatible products: FCC Part 15 Subpart B, ANSI C63.4-2014 CE EN 55032:2015, EN 61000-3-2, EN 61000-3-3, EN 50130-4. Power consumption (typical): 20 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz