Pro Fit Ergo TB675 Vertical Wired Trackball

60° vertical design for more natural wrist and thumb positioning. Plug-and-play USB-C connection with USB-A adapter included. Optical sensor with four DPI levels from 400 to 1600. 4D scroll wheel for vertical and horizontal scrolling. 9 customizable buttons. Patented push-button trackball ejection for easy cleaning. 3-year limited warranty.