Topic summary
Apple Mouse

Extracted from the Wikipedia article Apple pointing devices.
Apple Mouse IIc
Four months after the Macintosh debut, the Apple IIc was introduced with the addition of an optional mouse (the M0100) to manipulate standard 80 column text. The mouse was similar to the Macintosh mouse, though it was in a creamy-beige color to match the IIc's bright off-white case and had a slightly modified design which was sleeker than the Macintosh's blockier shape. It also was uniformly the same color, eliminating the Mac & Lisa's contrasting taupe accents on the mouse button and cable. Unlike the Macintosh, the IIc Mouse shared a dual purpose port with gaming devices like joysticks. In order for the IIc to know what was plugged into it, its mouse had to send the appropriate signal. Despite these differences, it carried exactly the same model number as the Macintosh version.