... Network backup, USB 2.0 backup Support RS-485 PTZ control (Speed Dome Camera), and present positions operation Support USB ... 2 SATA HDD 2 Channel alarm inputs & 1 Channel alarm control output Multiplex operation: Live, Record, Playback, Network can be ... etc. Internal DVD models: DVD+RW, DVD+R, DVD-RPTZ ControlRS-485IR Remote Control UnitSupportVGA outputSupportPS/2 MouseSupportPower Supply90~264 VAC,47 ...