This is JUMBO Tape Backup for DOS software from the original floppy disk that came with Colorado Memory Systems model Jumbo 250 QIC80 250MB Tape Backup Drive. This tape drive used the floppy disk cable interface, not SCSI or IDE. The original software disk was Colorado p/n 0063-05. Unzip the file Jumbo250_DOS.zip to either a 5.25" or 3.5" floppy disk, then run the file Install.exe from the DOS prompt. This software may or may not function under Windows 3.x or Win 9.x in a DOS window, but I have not tested it.