... loss11,3D intelligent positioning with PTZ dome12,Easy backup: USB devices, network download13,Alarm triggering screen tips, buzzer, ... selection, Digital zoom(any size)Backup ModeFlash drive/ USB HDD/ USB CD/DVD-RW / Network downloadNetworkEthernetRJ-45 port ( ... disk hibernation technology, HDD faulty alarmAuxiliary InterfaceUSB Interface2 ports, 1 for mouse control, 1 for backupRS232keyboard, ...