Logitech Trackman Marble Trackball Mouse 4 button 910-000806 T-BC21 New open box

Logitech Trackman Marble Trackball Mouse 4 button - 910-000806 T-BC21, Brand New in open box in perfect condition as shown on actual pictures. Please note that box was open to inspect, test and take pictures of the mouse. All is in perfect working condition. Brand: Logitech Color: Dark Gray, Red Connectivity Technology: PS/2, USB, Wired Special Feature Ergonomic Design, Programmable Buttons Movement Detection Technology: Optical, Trackball Number of Buttons: 4 Sculpted ambidexterous shape supports your right or left hand and stays in one place—move the cursor without moving your arm Moving quickly between documents or browsing your favorite Web sites is a breeze with large, easy-to-reach Back/Forward buttons Flexible wired connectivity means you just plug the cable into your USB or PS/2 port - it works right out of the box. Configure the buttons to do exactly what you want like switching applications, opening browser windows or jump to full while watching videos This mouse comes with the quality and design built into more than a billion mice, System Requirements: Windows Vista Windows 7 Windows 8 Windows 10|USB port|CD-ROM drive|Mac OS X 10.4 or later