Right now I am running PC-DOS 5.02 and Windows 3.1 which were shipped with the TP750Cs. The Adaptec installs fine, the SCSI drivers load fine, they see the Maxtor and Archive Tape (they list them on a baner during startup -- but ASPI2DOS.SYS doesn't see the Toshiba XM3201 (which is mist peculiarly seen by both Install and SCSI Probe).