The bottom of the Xerox Star mouse reveals no ball.
The front of the plug says XEROX in incised relief.
A celophane sticker on the plug's back says, "Assembled in Mexico."
Three raised spheres in the black plastic provide glides.
There they are, the LEDs, no ball. I assumed that this optical Star mouse required a special pad, since the Mouse Systems optical mouses I have from the early 80's M1-M4 models do require a metal gridded pad. Some people in-the-know kindly explained it and let me post their comments on a message page>
There they are, the LEDs, no ball. I assumed that this optical Star mouse required a special pad, since the Mouse Systems optical mouses I have from the early 80's M1-M4 models do require a metal gridded pad. Some people in-the-know kindly explained it and let me post their comments on a