... stream, multi-channel playback, multi-channel network operation, USB backup, imprinting.interfaceOperating interface16-bit true color graphical menu ... networkBackup modeBack up by network, by flash stick, USB portable HDD, USB imprinting,InterfaceVideo input4ch BNCVideo output2ch BNC,1ch VGA, ... 2T for each port.Wireless port3G,WIFI(connect USB ports with 3G or WIFI module)OtherPower supply12V/4A ...