Microsoft Windows NT 4.0 32 - bit version was a major release in 1996 of the Windows NT operating system targeting data servers and personal workstations markets. It comes in a factory sealed package. I have 3 Packages available if you need more than one. Price is for each package.This CD is an operating system software product manufactured by Microsoft in the United States and is intended for professional use by businesses and individuals looking to install or upgrade their Windows NT systems Workstation OEM CD English