Logitech Trackman Portable Mouse Trackball

By Xah Lee. Date: . Last updated: .

This laptop clip-on trackball came out around year 1991.

logitech trackman portable mouse
Logitech Trackman Portable Trackball [image source reddit]

The bar shaped thing is the left button, the dot shape is right button.

You clip this onto the side of your portable laptop.

Laptop exists in 1991. It isn't like today's. It was thick and heavy, with a tiny screen, about 640x480 pixels.

logitech trackman portable mouse trackball 24354
Logitech Trackman Portable Mouse Trackball

See also:

logitech trackman portable mouse 74537
Toshiba T4700CT laptop

Xah Keyboard Guide