I have a Upgrade media Product key for Windows 8 but it is for an upgrade of a older version of a OS already installed in a computer. The SSD in the NUC will be a new install (clean install).
http://www.eightforums.com/tutorials...8-upgrade.html
"The software covered by this agreement is an upgrade to your existing operating system (XP SP3, Vista, or Windows 7) software, so the upgrade replaces the original software that you are upgrading." Microsoft in a chat informed me that the upgrade version is not the full version.
Would this upgrade OS load and work in the NUC