My build will be in an NZXT S340, so no DVD drive to install windows.
I bought a laptop with Windows 10 in December 2015 and I have the anniversary update, but Windows support says I will need to buy Windows again.
I have the Windows install tool on one of my USB drives, so if the anniversary update won't let me activate my new PC, I need another product key.
Windows support said that I can get the key for $40 off of the Microsoft store, but the only option I see is a $120 download.
Will i actually be able to use my anniversary update for activation?
If not, where can I get the product key for $40?