

The Term “Microsoft Product Code” or “MPC” refers to the first 5 digit portion of the product id, It identifies the version of windows was originally installed.

PRODUCT KEY FOR WIN XP PRO X64 SERIAL NUMBER
The term “Product ID” referes to a code generated during your windows installation and can be found using the tool ProduKey, “Product ID” is not to be confused with “Product Key”, “Product Key” being what would sometimes be refereed to as your Serial Number The program works on almost all versions of windows including 64 bit, but be sure that you use the 64 bit version if on a 64 bit system, also be sure if using the ‘save’ button in this program that you have the proper key selected or else you could end up saving the wrong information such as a Microsoft Office key. It’s a freeware utility made by a company called NirSoft and can be found at.
PRODUCT KEY FOR WIN XP PRO X64 HOW TO
Each of the well known types (home & pro) have 3 basic sub types, here are instructions and references on how to identify what you have and what it means. Windows XP has many more versions than most people realize, its not just home and pro.
