Dawicontrol DC-2975U ULTRA SCSI3 Hostadapter Kit. Host interface: PCI, Output interface: SCSI. Data transfer rate: 20 Mbit/s. Built-in processor: 53C875. Cables included: 1xSCSI. Connectivity technology: Wired, Minimum system requirements: CD-ROM, Compatible operating systems: MS-DOS, PC-DOS, DR-DOS, Novell-DOS, Windows 95, 98, NT, 2000, XP 2003, VISTA,