Some of the old software before 2010 may not be able to install/run normally on x64 or Windows 10 systems. Be aware of it before purchasing it.
Windows NT 3.51 is the third release of Microsoft's Windows NT line of operating systems. It was released on 30 May 1995, nine months after Windows NT 3.5.The Windows NT 3.51 release is an update of the Windows NT 3.5 release.
NT 3.51 still used the Windows 3.1 desktop.
Windows NT 3.51 supports IDE, EIDE, SCSI and ESDI hard drives.
NT 3.51 was the last of the series to run on an Intel 80386 processor.