For sale a Genius GM-6 is a classic vintage serial mouse released in 1987 by Kun Ying Corporation (Genius). Designed for early IBM PC XT/AT computers, this 3-button mechanical ball mouse originally connects via a 9-pin RS-232 serial port and features a 200 DPI resolution.

Comes in the original box, the label on the plastic box has come unstuck and shows signs of water damage but the mouse itself appears like new and works fine.