Review on 💪 Enhance Your Gaming Experience with ELECOM Left-Handed Wireless Thumb-Operated Trackball Mouse - 6-Button Function and Precise Optical Sensor by Erica Shine

No problem for me, it works fine on Linux without drivers (it's "class appropriate"). Only suggestions for the next version of ELECOM: make the keys a bit more stable so that the fingers can rest without accidental clicks; Tilt the design to lift the ball up, just like the Logitech MX Ergo and Kensington Pro Fit vertical trackballs. ELECOM is very responsive and vertical movements increase comfort and control.