Logitech Trackman Marble Trackball Mouse“ Wired USB Ergonomic Mouse for Computers, with 4 Programmable Buttons, Dark Gray

TRACKBALL COMFORT - Sculpted ambidexterous shape supports your right or left hand and stays in one place-move the cursor without moving your arm, CONVENIENT CONTROLS - Moving quickly between documents or browsing your favorite Web sites is a breeze with large, easy-to-reach Back/Forward buttons, ZERO SETUP REQUIRED - Flexible wired connectivity means you just plug the cable into your USB or PS/2 port - it works right out of the box. , PROGRAMMABLE CONTROLS - Configure the buttons to do exactly what you want like switching applications, opening browser windows or jump to full screen while watching videos, BUILT BY LOGITECH - This mouse comes with the quality and design we've built into more than a billion mice, more than any other manufacturer. System Requirements: Windows Vista Windows 7 Windows 8 Windows 10 USB port CD-ROM drive Mac OS X 10. 4 or later.