You do realize there is nothing special about a
macro tablet. It is just a Wacom or similar tablet interface for a computer.
First off, you can always download the manuals for other consoles from the manufacturer's website and look it up. Second, I think you will have a hard time finding a tablet that will work with your 300. I believe they need to be PS/2 and not USB (yup, hate to break it, but you can't use the USB ports on the back of the 300,
DOS doesn't support them), and those are very rare these days if they exist at all. I suppose you may be able to find them on ebay. Lastly, we advocate not to spend your own money on things for the school, you have no guarantee that someone else wont break what you buy, and then you loose. Tablets are not cheap, in fact they are usually very expensive, and to really be effective as a
macro tablet you want to have a relatively large one. Also, in reality, do you really use enough macros often enough to warrant having a tablet, or do just want it because it seems cool?
I would imagine, if nothing else, other consoles would recognize the tablet a the input device it really is, and you could probably use it as a
mouse. That of course may not be too helpful to you. Even if you were an avid Photoshop-er or you did a lot of graphic arts on your computer, you would probably want a tablet that is more sophisticated than what you need for the light board, and if you got one to do those things, it probably wouldn't work with your light board. If you are bent on having a tablet for the board though, I would go the the art department or graphics arts or even who ever is in charge of computer tech, and see if there is an old PS/2 tablet kicking around the school.