Gvision DVR Cards, GV1480 are GVision top level product series. With the 3-in-1 combo card (8-16 ch ... Cards, GV1480, GV1240 and GV1120, are GVision top level product series. With the 3-in-1 combo card (8-16 channels ... -up, Modem-to-modem, ISDN Backup Device HDD, NAS, CD-R/R-W, DVD, DVD-R, ZIP, JAZ Operating System Windows2000, WindowsXP, Windows Server ...