Big Track Trackball

Big Track Trackball is a very big, easy-to-use trackball-style mouse. It features a 3-inch yellow ball and has two blue buttons (for left and right mouse clicks) located behind the trackball to avoid unwanted clicks. Works on any Windows or Mac computer with USB or PS/2 port.

PS2-to-USB Single-Port Adapter is custom designed specifically to convert a BigKeys (PS2) keyboard to a USB port. Adapter accommodates the special BigKeys "no run-on" feature.