... communication, backup, mobile phone monitoring and interface- 2 USB 2.0 interface- powerful function of CMS, displayed 64 ... FramesupportConnectorRJ45 10M/100M,RS485Hard Disk Interface2000GUSB Interface2 USB interface,support USB mouse,U disk,USB mobile hard diskVGA Interface1280*1024/60HzAlarm ... wireless cameras and camera accessories. 4 Channel Hard Disk Video Recorder, H.264 Network DVR, RT-8104V