... simultaneous realtime playback, GRID interface & smart search> Support Multi-brand network cameras such as: Dahua, Arecont Vision, AXIS, Canon, Dynacolor, ... to automatically discover network cameras> Support 2 SATA HDDs up to 6TB, 2 USB2.0> Built-in web server, CMS(DSS/PSS ... 100M/1000M)Network FunctionHTTP, TCP/IP, UPNP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPOE, DDNS, FTP, Alarm Server, IP ...