... upgrading4. 480fps Realtime Recording, 16ch video input5. Easy backup with USB flash drive, Network6. Support Time, Motion, Alarm searching ... Multiple Operation Mode20.Support live display, record, playback, backup, network21.VGA Output22.Built-in VGA interface, putput resolution ... detection HDD Storage 2 SATA HDD, 2000GB supported USB Flash Drive Backup YES (3pc USB2.0 interface) Network Interface ...