... , camera blank, video loss Easy backup: USB devices, DVD-RW ,network download Built-in web server, Support CMS, ... IP Filter, PPPOE, DDNS, FTP, Alarm ServerRemote OperationMonitor, PTZ control, Playback, System setting, File download, Log informationHard DiskHard Disk2 SATA ... port, Max 4TB HDD supportedSpace OccupationAudio: 28.8MB/H, Video: 56~1800MB/HHDD ...