On Sat, Dec 28, 2019 at 5:39 AM Pete Turnbull via cctalk <cctalk@classiccmp.org> wrote: > Those old adapters are definitely just passive wiring, and were commonly > supplied with dual-standard mice. That's why they're green.
I have green ones for mice, and purple ones for keyboards (same signals on USB side, different pins on PS/2 side). > They only work with devices that inherently support both protocols. Yep. I don't even know which of my keyboards work with the adapter, but I should probably test a few and mark them and set them aside for 90s machines/projects (like Amiga PS/2 keyboard adapters which were popular at one point because of the scarcity and cost of genuine Amiga keyboards). -ethan