... Digital Video Recorder 1.Support 2 USB DVR 2.PTZ, Audio, Network, 3.VGA 4.OEM CCTV DVR H. 264 Network Digital Video ... 4. Dual-core CPU; Steady System Function;5. Playback, video, network transmission, mobile browsing, and backup etc. work ... multi-screen real-time preview, settings, backup and playback video through IE; CCTV DVR Specification: BCS6504BCS5304Video CompressionH.264Video Preview ...