GV-800 Input Type: BNC*4(v2) / DB15*2(v3)Video Input(s): 4, 8, 12, 16 Cameras.(The price is the same)Audio Input(s): 4 chRecording Rate: 120 fps (NTSC), 100fps (PAL). Display Rate: 120 fps (NTSC), 100fps (PAL). Video Resolution: 320x240, 640x240, 640x480, 640x480 S/WCompression Format: Wavelet, MPEG-4, GeoMPEG4GV-DSP Support: YesGV-A16 Support: YesGV-NET/IO Card Support: yesDimension : (BNC)155mm*100mm / (D-Type)150mm*100mmsoftware: V5.4 / V6.0 / V6.1(The software is free).ps. GV-800 is currently not compatible with VIA series chipset motherboar