MK Prosopsis

Roller II Trackball


A mouse alternative that is ideal for users with moderate to severe motor skill difficulties.The trackball is easy to operate with your finger-tips. It features three buttons, which are guarded with a removable finger guard which helps locate the correct switch, support the hand, and avoid pressing wrong keys. A useful latching 'drag-switch' is also fitted. No additional software is needed. Comes complete with three switch sockets in case you need to attach switches to replace the buttons.


  • Drag lock button for easier mousing
  • Three buttons, and three corresponding switch sockets
  • Colour coded buttons and switch sockets
  • Removable finger guard to support and guide hand
  • Solid construction keeps unit in place
  • Ideal for users with motor skill difficulties
  • Plug and Go - no special software needed