Windows NT Workstation 4.0 Full Version Install CD w/ License

You will find that Microsoft brings a familiar and reliable feel to any operating system interface.

Microsoft Windows 7 Professional OEM with valid COA / install code

Comes with a VALID COA and installation cd/dvd media. Sealed in packaging. NO TRADES.

Microsoft Server 2012 R2 Standard 64-Bit License & DVD Media for PC (P73-06165)

A nice touch is the built-in backup options that help protect your important files automatically.

Microsoft Windows 7 Professional Full 32 & 64 Bit DVD Retail NEW-SEALED

What stands out about Microsoft is the long-term support you get with each major release.