IBM, Mouse, models:

31P7405 - ThinkPlus Optical ScrollPoint Mouse	User Manual
Optical 3-Button Travel Wheel Mouse 800 DPI - PS/2 and USB	User Manual
ScrollPoint	User Manual
ThinkPad Travel Mouse	User Manual
Travel Wheel Mouse	User Manual
USB Sleek Mouse	Manual
USB Travel Mouse	User Manual
USB and PS/2	User Manual