... to backup and update Main features:H.264 compression & network transmission 7" LCD monitor built-in optional Linux operating system ... it always including:1pc DVR,power adapter, power cable,1 USB mouse,USB cable,network cable,IR remote,user mannu,software CD, battery, ... System NTSC / PALMultiplex Operationlive display, record, playback, backup and network at the same time Input / Output Video BNC: 4-ch ...