Up to 4 cameras with SXGA realtime live view. H.264 dual-stream video compression. 1ch@960H + 3ch@CIF (1~25/30fps) realtime recording. TV simultaneous video output. Full channel synchronous realtime playback. Support 1 SATA HDD, 2 USB2.0. Multiple network monitoring: Web viewer, CMS(DSS/PSS) & DMSS. Aviation connectors adopted.