Fill the key in the field during Windows installation, set the wi-fi connection when requested and as soon as Windows will load the brand new desktop you'll find it already activated!!
Absolutely perfect guys!!

Thank you, Worked instantly. Big thumbs up!

I used to buy my keys from Ebay all the time but since Ebay is not a safe place to buy it anymore i looked for another place and found Gamers outlet . Totally worth it.

Fresh install on Win10 Pro 64 - Worked fine. Very pleased.

Thanks!
All work 100%, pleasure to cooperate with You!