Adaptec 2940U. Host interface: PCI, Output interface: 32-bit PCI. Data transfer rate: 20 Mbit/s. Operating temperature range (T-T): 0 - 55 °C, Operating relative humidity range: 10 - 90 %. Cables included: SCSI. Bundled software: EZ-SCSI 5.0, Connectivity technology: Wired, Compatible operating systems: Microsoft MS-DOS 3.x Microsoft MS-DOS 4.x Microsoft MS-DOS 5.x Microsoft MS-DOS 6.x