... , 1 channel usb dvr, 1 channels usb dvr, usb dvr for 4 channels,usb dvr box,dvr, cctv dvr,mini dvr, pen recorder,video recorder ... ,easycap3104,gum recorder, dvr box,stand alone dvr, image capture card,dvr card, portable dvr, usb recorder ... , ISDN, LAN, ADSL, Cable modem and InternetSystem requirements:1. USB port: Compliance USB 1.1/2.0 port2. OS: Windows 98/98SE ...