... Bckup file thouht USB and network 4.With VGADigital Video RecorderCP-9104V1)H.264 ... Video,4CH Audio,with VGA 4)Realtime recording,Motion detection 5)Manual control 6)Play back ... :1.4.,PC playback,USB backup,network backup,with Network ... Interface 7)Support 2 harddisk(2TB),IR remote control 8)Size:35*25*6.5CM digital video recorder of surveillance cctv dvr ...