... live, recording, playback, backup & remote accessControl ModeFront panel, USB mouse, IR remote control, Keyboard, NetworkVideo & AudioIP Camera Input4ch ... Shuffle, Backup selection, Digital zoomBackup ModeFlash drive/ USB HDD/ USB CD&DVD-RW / eSATA Device / Built-in ... Auxiliary InterfaceUSB Interface2 USB2.0 ports, 1 For mouse control, 1 for backupRS232Dahua keyboard, PC communicationRS485PTZ ...