A good arcade trackball for you MAME project.
This trackball can be connected to your PC via PS/2 port or USB with adapter like a computer mouse under Windows.
It provide X and Y axis control, and 3 separate push buttons (wired with 4.8 mm crimped terminals)
His translucent ball lights in green when connected and turns to red when using a push button.
Diameter: 4.5cm
Lenght: 105 mm
Width: 100 mm
Height: 43 mm
Cable lenght: 1,5 m (with 4.8 mm connectors for additional push buttons)