*Update* Windows 7 support ended on January 14, 2020, as seen in this update from Microsoft.
This 64-bit version of Windows 7 Professional from Trusted Tech Team includes the activation license and a DVD to install the software. The professional version of this operating systems has the same features as the Home Premium version and added applications including an encrypting file system. This version of the operating system is for 64-bit machines and cannot be installed on 32-bit machines as the software will not work in that environment. Please check your system specifications before purchase.
Microsoft Windows 7 Professional with SP1 from Trusted Tech Team makes it easy to work from virtually anywhere. Set up projectors, printers, networks and more using built-in tools and features. The advanced operating system even includes an automatic backup solution to ensure your work is always safe and secure, no matter where you are. Buy Windows 7 Professional from Trusted Tech Team and enjoy competitive pricing on the Microsoft operating system along with speedy delivery. Please note that the software is specially designed for use on 64-bit machines and cannot be used on 32-bit machines.
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The only issue is that this version of windows is the OEM version. However, the details on the web site did not clearly specify that this was the OEM version. I was specifically looking for a non-OEM version.