... USB Port -H.264 Compression, -4CH Video,4CH Audio -Support All Windows OS -Easy Connect All Laptop &PC 4CH CCTV DVR Card with USB Port ... (SY-UR041)1,4CH Full Real-time 25fps per channel2,4CH Full D1 704x576 per channel3,Support ... Hard disk usage:100-400M/ch/Hour11,PTZ protocal:Support many kinds protocal12,Record resource: 100fps Video&audio ... SOONY!!! 4CH CCTV DVR Card with USB Port (SY-UR041)