: Tie to the user and can be moved to a new PC.
: If a site is selling just the 25-digit code for under $5, it is likely a volume license meant for businesses, which Microsoft can deactivate at any time. Look for "Retail" over "OEM" : where to buy windows 7 digital download
Buying legacy software requires extra caution to ensure you don't end up with a "grey market" key that fails. : Tie to the user and can be moved to a new PC