... operation simultaneously:Preview,recording,playback,backup,network live,mobilephone viewControl ModeSupport wireless, wired mouse, the front panel, ... Alarm outputNetwork interface1pcs RJ45(10/100M/1000M Adaptive network card),3G,WIFI )USB interface2PCS USB2.0 interfaceHDD interfaceSupport ... days longer Goldantell DVR, factory price, high quality, welcome your inquiry ! ! ! 32CH DVR Support wireless