1.Adopt embedded Linux OS,the most stable 2.16 bits true color user friendly interface 3.Water mark supported 4.Multiple control:front panel,IR remote controller,USB mouse,network keyboard 5.Backup: Digital zoom for single picture, playback and backup simultaneously 6.USB mouse: setup of DVR, picture control, and information input, backup recorded ,upgrade software 7.Powerful network:built-in web server,multi-DVR client. Network access for remote live 8.viewing,recording,playback,setting,system status. 9.Smart HDD management:non-working HDD hibernation,HDD faulty alarm