DVR 1.USB2.0, USB mouse USB backup,USB-RW ,USB ... , also support cottage phone 16 channel DVR 100 FPS Realtime Recording H.264 Compression VG-H8104 Feature:H.264 double stream, advanced and filtering techniques ... detection >timerpalyback1ch,multi-chSearchtime,loglist,event, ChannelBackupHDD/SpaceAudio: 28.8M / h+Video: 25 ~ 450M / hStorgeHDD, WEBBackup modelWEB,USB,USB-RWPortVideo input4 ...