... 16 ch playback,HDMI >8 SATA,4 USB, >Free PSS software NVR3804V: 4 channel@D1, 4 channel@720P, 4 ... microprocessorOperating SystemEmbedded LINUXSystem ResourcesPentaplex function: live, recording, playback, backup & remote accessControl ModeFront panel, USB mouse, IR remote ... Next camera, Previous camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeFlash drive/ USB HDD/ USB CD ...