As much as I hate inkjet printers (its ok, the plotter makes up for that ), it sounds like quite a setup. Speaking of trackballs, as much as I used to like putridpads a few years ago, for some reason in the past few years I've taken quite a disliking to them, and have found myself starting to wish that they still gave you the option for a trackball on modern laptops (if a trackball was an option on my MacBook, even if it cost an extra $50, i probably would have sprung for it). I think it has something to do with the fact that most trackpads on modern laptops are wide enough to land an Airbus A380 (PC laptops are especially bad, on some the trackpad seems to take up half the palm rest, and when I touch type the cursor jumps all over the place), whereas older lappys, such as say, my 1400 have, well, a much more civilised size trackpad.

As for the PowerBook 100, why would Apple incorporate an ADB signal into the PB100's power connection? I know Apple's had some strange ideas over the years, but why would they do that? And how would they do it, there's only two connections - the tip (7.5 VDC) and the round bit (its late, I can't remember the technical name, but its the ground, anyway ).