J-Mouse
Alternatively referred to as a JMouse or J Mouse, a J-Mouse is
a mouse solution used with older portable computers that utilized the "J" key on the keyboard and commonly had two separate buttons for the left and right-click below the space bar. As can be seen in the picture to the right, the Zenith or ZDS Z-Star EX keyboard the J-mouse is uniquely identified with a picture of a mouse and an indented circle so it can be easily identified visually and physically from the other keys on the keyboard. Below is an example of the left and right mouse buttons found on the laptop.
Because of its difficulty to use and better technologies that were later introduced, this mouse is no longer used. A big thanks to Chris with ZDSParts for supplying us with a clear picture of the Z-Star EX laptop so we could create the above pictures.
This should not be confused with the TrackPoint eraser head mouse still used on some laptops.
Also see: Mouse, Mouse definitions, Touch pad, TrackPoint