Frisby 800 Dpi Optical Mini Size Notebook Laptop Computer Ibook Mouse USB Mini Size Optical Notebook Laptop Mouse, USB Plug Plug and play compatibility makes installing the mouse a snap on all versions of Windows from 95 right up to XP, VISTA and Mac computers. Advanced optical sensor means exceptionally smooth tracking The mouse designed ergonomically for ease of use for both right and left handed users The mouse has 800dpi optical sensor for faster movements