MS are a lot less strict with their activation than they used to be. If a motherboard and CPU combination has been registered for a version of W10 then it will probably stay registered forever.
It was not always so. I had a full retail version of XP on my Pentium 3 PC and decided to add a Blue Tooth dongle. After installing the driver Windows informed me that I was now using a totally different computer and that I would have to phone up for activation !
The lady at Microsoft told me that installing the Blue Tooth protocol stack for the dongle was considered a hardware change but seeing as I had the retail version of XP she would reactivate me just this once ?