I've added new 500GB SSD (Samsung 970 Evo Plus, will be used only for windows and few other sw except games), since in old PC I have Samsung 960 (250 GB) and new mobo do not have this one in compatibility list (970-990 are listed) and sent order
... should be home in 1-2 days. My "old" PC will very likely end on my son desk, so it will have its use. He is very impatient, but he will need wait till next year when I buy new graphic
...
I've now checked windows license on my PC ... it is OEM license installed on that older 960 samsung. So I need to take care about one more thing, and it is new windows 11 license. I'm little unsure how to proceed with this, but I can buy secondary licensed windows 11. In one local verified shop is avialable an "Retail" version for 59 EUR. To be sure I specifically asked about it, hence they have description in Czech. It is not exactly cheap but still 1/3 of normal price. I also have cheaper options (around 40 EUR, but this was OEM license). There should be possible also buy old OEM win 7 key and use it for win11 activation, but I do not know exactly how it works and if it really is worth the hassle.