What Does IntelliPoint Mean?
IntelliPoint is a Microsoft IntelliMouse series driver that is required for IntelliMouse compatibility on Windows and Macintosh operating systems (OS). An IntelliPoint driver must be installed for full IntelliMouse functionality.
Techopedia Explains IntelliPoint
IntelliPoint supports all Microsoft mouse devices, as well as generic 3/5-button versions. A key IntelliPoint feature is that mouse buttons may be defined to run all executable files, programs and program functions.
Windows XP's IntelliPoint version has a scrolling feature for user-defined mouse behavior, which is beneficial when working with windows of alternate sizes.