Say what you will about suitcase computers, but at least most of them still have their keyboards with them. [danjovic] has this vintage Brazilian computer from the 1980s called a Gradiente Expert.

For instance, a decent PS/2 to USB adapter will cost you as much as the Zero did, if not more. But if you just need to drive your Pi Zero from your old Model M (we hear you!) you’ve got to do it ...

The pointer shipped with a then-standard PS/2 port but also worked with USB when using the included adapter. What you may not ...

Microsoft's solution for a USB mouse that might need to connect to a PS/2 port was to include an adapter in the box ... a simpler time when mixing up the keyboard and mouse cables or bending ...