CCTV DVR H. 264 Network Digital Video Recorder 1.Support 2 USB DVR 2.PTZ, Audio, Network, 3. ... browsing, and backup etc. work simultaneously;6. Access to local multi-screen real-time preview, settings, backup and playback video through ... *16bit ADPCMAudio OutputRCA, 1 channelAudio InputRCA , 4 channels RCA , 1 channel(or 4 channels, option) HDD Port1 SATA port, support up ...