D1 Display Resolution Real-time H.264, MPEG 4 - DVR Card      - PAL / NTSC - System Model No. Operation System Max. cards / PC Camera Input Display Rate Recording Rate Audio Input RX-7816 Windows 2000/2003/XP/Vista 3 cards 16 channels 200/240 fps 200/240 fps 8 RX-7808 8 channels 100/120 fps 100/120 fps 4 RX-7804 4 channels 50/60 fps 50/60 fps 1 RX-7408 8 channels 200/240 fps 200/240 fps 8 RX-7404 4 channels 100/120 fps 100/120 fps 4 RX-7104 4 channels 25/30 fps 25/30 fps 1