HIKVISION Card  Key Function:  1. Video Input: 4chs; Video Output: 4chs  2. Audio Input: 4chs; Audio Output: 4chs  3. Recording Rate: 120fps(N), 100fps(P)  4. Compression Format: H. 264  5. Single system supports Max. 16pcs, total 64channels  Specification:  01. VIDEO INPUT: 4 Channels  02. AUDIO INPUT: 4 Channels  03. TOTAL CAPACITY: 120 fps (NTSC), 100 fps (PAL)  04. PREVIEW RESOLUTION: 704x576(PAL), 704x480(NTSC)  05. COMPRESSION FORMAT: H. 264, Support CBR, VBR  06. RECORDING RESOLUTION: 4CIF: 704x276(PAL), 704x480(NTSC) DCIF: 528x384(PAL)  528x320(NTSC) 2CIF: 704x288(PAL), 704x240(NTSC) CIF: 352x288(PAL)  352x240(NTSC) QCIF: 176x144(PAL), 176x120(NTSC)  07. AUDIO COMPRESSION: Sample Radio is 16KHz, Output Ratio is 16kbps i  08. OS SUPPORT: Windows 98/2000/ Windows XP  09. MOTHERBOARD: Intel 845/865/915 Chipest  10. MEMORY: 256MB or above  11. DISPLAY ADAPTER: Nvidia Geforce Mx400/420/440 series, FX5200/5600  ATI Radeon 7000/7200/7500/8500/9000 Series, ATIx700