Lenovo ThinkPad Travel mouse USB Type-A + PS/2 Optical 800 DPI

The ThinkPad Travel Mouse (31P7410) requires no mechanical ball or mouse pad, and works on many surfaces. The small size and cable make this mouse ideal for the mobile professional and provides USB connector. As a USB device, the mobile mouse can be connected to any enabled USB port. - 800 DPI optical sensor for precision control without dust-attracting mechanical ball - Programmable wheel for scrolling acts as a third button - Small size, lightweight - Ambidextrous design for right- and left-handers - Cable wrap to secure cable when traveling - Four-foot (1.22-meter) cable with a USB connector