... 2-way audio)SystemOperating System Embedded Linux OSSATA DevicesMax. 7 x SATA Devices(HDDx7, HDDx6 + eSATAx1, HDDx5 + DVD±RWx1 + ... (NO, NC)Relay OutSensor-in x 8Relay-out x 4Serial Interface2 x RS-485 (Inx1, Outx1)USB2 x USB2.0Dimension ( mm )442(w ... HTTP, DHCP, PPPoE(ADSL), NTP, DDNSApplication Windows XP/VISTA/7, Mac OS XRemote SoftwareiWatch DVR, IE BrowserAccount1 Admin + 8 UsersCMSCMS for Windows ...