Kensington Orbit Mouse - Wired Ergonomic TrackBall Mouse for PC, Mac and Windows with Scroll Ring, Ambidextrous Design and Optical Tracking - Blue (K72337EU): Amazon.co.uk: Computers & Accessories
Kensington Orbit® Optical Trackball Mouse from Posturite
Kensington Expert Mouse - any experience under Manjaro? - Support - Manjaro Linux Forum