4ch real time dvr card Features: 1) 4ch real time monitoring 2) 16ch time delay monitoring 3) supports two cards for 8ch real time monitoring 4) display and recording speed: A) pal: 100fps B) ntsc: 120fps 5) compression format: wavelet 6) resolution: A) pal: 768 x 576, 384 x 288, 192 x 144 B) ntsc: 640 x 480, 320 x 400, 160 x 120 7) transmission network: pstn/isdn/lan/adsl/ddn 8) remote monitoring: ie browser and client software 9) remote modes: isdn, ddn, pstn, lan, wan, internet, adsl, modem System requirements: 1) motherboard: abit 848pe 2) graphic card: geforce 4 or ati r70000 64m or better 3) memory: 256mb or more 4) hdd: 80gb-120gb 5) cpu: intel cpu 6) operating system: windows 98/me/2000/nt 7) windows directx 8.0 or 8.1.