Hengtong HTEDVS/R-SPC Embedded Stand-alone Digital Video Recorder is a mainboard with 4 channels video input,which can be assembled in the standard home PC or industrial chassis. By ing the video card the standard PCI slots the real time video and audio input channels will be expanded up to 8/12/16/20/24, and non real time video input channels up to 32-64. Sound card. Network card, VGA card, RS232, USB integrated on the mainboard with 64M memory. Video output, VGA, MIC, audio output and infrared remote control interfaces offered, alarm I/O, mouse operation and NAS (SMB/CIFS) supported.