I see the occasional Model M Spacesaver keyboard (IBM) appear here and there and it seems they are always either 1987 or 1992. Should one be concerned re: one vs. the other? Will 5 years make that much diff? Is the '87 PS/2 or the older connector? Either case, does both convert to USB similarly well?
Were there Spacesavers made in the years between?
Thanks.
bp