Any 32-bit Intel architecture anything. 64bit is not asking for the moon any more. You know that favorite 32bit game you still want to keep playing? Well, if you can’t get it to run in an emulator, there are 100 games out there you’ve never played before, for every game you feel as though you’ve lost.
And that’s the main problem with that kind of tech. I agree with FriarDest but I’m in the same position as you where I should then buy new peripherals. I guess it will come in time when we gradually change our gear.
The question I was trying to ask was this: what older technologies are so old, and burdensome to still have around in a “legacy” sort of way (from a software maintenance point of view), that we should get rid of them (and only a small minority will grumble, but for the greater good, we should ignore them). What technologies create more harm than good, such that we would all benefit to get rid of them, without undue suffering on the great majority of people (who have easy-enough alternatives to turn to)?
Yes, I’m going to soon be getting a USB wired mouse on purpose. To replace a wireless mouse. Yes, I know, sacrilege! I’m tired of using up AA batteries, when I don’t need to, plus the new mouse is bigger and more comfortable.
You know what a realistic replacement of UEFI could be (albeit it’s limited to booting one OS)? Ironically, the other (firmware-flashing) mechanism which sets up booting which Microsoft invented (which is used in the new Raspberry Pi Pico), called UF2.