Desktop trackball for assistive technology Traxsys Input Products
63.5mm - Roller II

The latest version of the Roller desktop trackball incorporates a latching drag key, three colour coded jack sockets for external switches, removable finger guard and USB/PS2 compatibility.
This device offers an easy to use alternative to a mouse and has proved to be very popular with users of all ages.
Captive fasteners in the base allow the device to be attached to a desk or wheelchair tray.

Features:
No additional software required
PS2/USB compatible
Removable finger guard
Mounting Points
Reversible Right/Left buttons

More specifications...