Have an Apple IIc Plus, and purchased from eBay an A2M4015 mouse for it. Sadly, the cursor would move in all directions except for the left. After a great deal of web searches, came across this piece, which told me in short that the mouse I purchased could not work. So then I looked further and found this statement, which explained that only a mouse made for the Apple IIc was guaranteed to work.
So, in short the A2M4015 won't work, and the M0100 mouse is not likely to work on my Apple IIc Plus. I need a mouse designed specifically for the Apple IIc. If you have one, please drop me a line. Thanks!