@Journey Aren't those the Pro series that you have that are supposed to be for the likes of Dell? If so could you tell me what motherboards are you using and have you had any problems with bios support please?
They are labelled Pro due to some additional features, and as still classified as OEM only, but you can buy them from many places. I've used them in everything from A520, B450's, 550's and even a couple in X570's for people who are waiting on GPU's to be come available. The only problems I have had are as you mentioned with some older boards not having the BIOS support, but there are a good few that don't mention support on the CPU list but do in fact work just fine.