... 3.support, ONVIF HDMI, 8pcs HDD 4.2U 16CH NVR 4/8/16 Channel 2U Network Video RecorderModel: NVR3804/3808/3816Product Features ... , SMTP, NTP, DHCP, DNS, IP Filter, PPPOE, DDNS, FTP, Alarm Server, IP Search(Support Dahua IP camera, DVR, NVS etc)Max ...