1,4CH CMS H.264 DVR Recorder CCTV 2,With total 100fps support 4D1@25fps 3, ... Support a 2TB HDD, with VGA, RS485, mouse 4CH CMS H ... phone live view via 3G netSupport a 2TB HDD, with 2 USB2.0 slot, support USB, mouse, backup, burning ... , upgradeStrong Network server, support IE review and CMS(can manager over 500 units DVR)With Chinese, Russian, ...