Specification Input type : D-type: db15 x 2 Video input(s) : 4, 8, 12, 16 cams Audio input(s) : 4 channels , & 16ch(with gva16 board)is optional Recording rate : 120 fps (ntsc), 100 fps (pal). Display rate : 120 fps (ntsc), 100 fps (pal). Video resolution : Ntsc: 720x480, 720x480 de-interlace, 720 x 240, 640 x 480, 640 x 480 de-interlace, 640 x 240, 320 x 240 Pal: 720 x 576, 720 x 576 de-interlace, 720 x 288, 640 x 480, 640 x 480 de-interlace, 640 x 240, 320 x 240 Compression format : Wavelet, mpeg-4, geompeg4 Gv-dsp support : Yes Gv-a16 support : Yes (what's gv-a16 board?) Gv-net/io card support : No Software : V8.0/v7.0(with usb-dongle) / v6.1 / v6.05 Dimension : New pcb(d-type ver7.05): 175mm x 98mm. Old pcb(d-type ver6.1): 150mm x 100mm. Note: gv-800 is currently not compatible with via series chipset motherboard. System requirements Os supported : Windows 2000 / windows xp / windows 2003 Cpu : Pentium 4 - 2.0 ghz Ram : 256mb minimum Hdd : 80gb recommended Vga : Nvidia geforce2 mx200 32mb Directx : 9.0 or above