... All Windows OS -Easy Connect All Laptop &PC 4CH CCTV DVR Card with USB Port (SY-UR041)1,4CH Full Real-time 25fps ... channel3,Support Windows 7 64bits & all window OS4,Video/Audio Channel:4chs video/4 chs Audio5,Compression mode : H.264 Main ... requirements: USB2.0 PC with 1GHz processor,256MB RAM,10G available Hard DiskWelcome to visit SOONY!!! 4CH CCTV DVR Card with USB Port (SY ...