USB Serial Number

Question: Where is the information about the USB Serial Number and it's effect on the PC registry documented, if documents exist? Is it readily available? Are there commands for all current Microsoft operating systems, i.e. Win95, Win98, Win2000, Me, NT4, WinXP etc ? and what are they ? Are there commands for Linux or Macintosh O/S?



Please contact Microsoft and Apple directly about this. We do not have such intimate knowledge about the OSes.