My newest computer (custom mini-ITX with an AMD 5700X3D, 64 GB RAM, Radeon 9070XT, 4 TB NVME, etc.) is still compatible with the keyboard from my first computer (a Tandy 1000 RLX HD with an Intel 80286, 1 MB RAM, VGA graphics, 20 MB HDD). Manufactured three decades apart, but they both have PS/2 ports!
I still have that Tandy keyboard; I should dust it off and plug it in.
My newest computer (custom mini-ITX with an AMD 5700X3D, 64 GB RAM, Radeon 9070XT, 4 TB NVME, etc.) is still compatible with the keyboard from my first computer (a Tandy 1000 RLX HD with an Intel 80286, 1 MB RAM, VGA graphics, 20 MB HDD). Manufactured three decades apart, but they both have PS/2 ports!
I still have that Tandy keyboard; I should dust it off and plug it in.