Support backup with USB Flash Disk, Movable hard disk,USB writer, Network .Support 1channel. Main output, 1channel. VGA outpu Main FunctionKT7008ACOperating systemEmbedded Linux OSVideo Compression FormatMain Profile H.264Video Input8 Channels BNCVideo Output1 Channel BNC, 1 Channel VGA(1280*1024)Audio Input/Output8Channel RCA/1 Channel RCADisplay Picture1/4/9Digital Zoom,PIPSupportsMultiplex ...