Windows NT 3.51 Intel Platform
"Seagate SCSI DAT Tape Driver. This driver may be required if your drive is labeled "Seagate", and has a "STDxxxxx" model number. This driver differs from the 4MMDAT.SYS driver supplied with Windows NT 3.51 in that it recognizes Seagate model STDxxxxx tape drives which return "SEAGATE DAT" in response to a SCSI Inquiry command, it also has an extended time-out period to allow for error recovery. This self-extracting file has instructions inside on specific Seagate tape models, as well as instructions on how to install the driver and create a driver diskette.
For CTDxxxxx and Archive models use the 4MMDAT.SYS driver supplied with Windows NT 3.51. The driver above can be used with these models, but is not required."