New
#31
Yes, in fact a clean install won't even ask you which edition to install or ask for a key. That OEM key shown by ShowKeyPlus is embedded in the firmware of the PC. Setup will detect this key, use it to determine that W10 Pro should be installed, then Windows will use it to get activated by the Microsoft activation servers with a digital license.
All above board and legitimate because this PC is licensed for the OEM W8.1 Pro and that license is entitled to an upgrade to W10.