... CCTV DVR H.264 compression format 4ch video input,1ch BNC output,1ch VGA output 4ch audio input,1 ch ... audio output USB backup 4CH, H.264, SATA, Support mouse, USB, network, ... Output1 channelPlayback & BackupPlayback Channel1/2/4/AllSearch ModeTime/Date, Alarm, Motion Detection ... System setting, File download, Log informationHard DiskHard Disk1 SATA port, 2.5” SATA HDDSpace OccupationAudio: 28.8MB/H ...