Why would someone want to know the product number on the underside of my laptop?

Answer:

unless this soul is someone you called for lend a hand with your computer utter the manufacturer or a laptop repair man then dont supply that info out.
is the persons desires the windows activate key later they want to activate their window using your product number
so they could use your windows Cd KEY.



you want that key to install window
They want to buy one like it.