I guess PS4 and PS5 controllers weren't working before now, because detection wasn't working. I learned this to my horror tonight after trying them on a new computer. I blame myself because I should've reasoned that only one of their serial numbers was relevant to detecting them. The other number may well be unique to every controller or generated on the computer when it's first plugged in for all I know. (I kind of remember the controllers installing drivers when I plugged them in... it's possible that's what the second number is... although that begs the question why they didn't do that for my new computer. If that's the case it may be that they do work for everyone else... if not, then they have never worked and no one has tried to use them... ever... or no one cared to report that they weren't working... I'm not sure which is more depressing if so! But I don't want to end on a depressing note, so please let me know if they worked for you before or if they work for you now. Surely I'm not the only person with PlayStation consoles.)