... , support PPPoE,DHCP,TCP/UDP protocol ect. Support 1,4,9,16 multi-screen pre-view, multi- preview resolution ... can support net backup, security factor is very high. 4. Support 4/8/16 Channels,can be connected into Max ... 4/8/16 pcs of monitoring equipment.with DVR and ... accomplish USB outlet and net remote upgrade.Support 2,4 or 8 pcs of SATA outlet,giant big HD ...