Bad link.
To answer your question, an OEM version that you might purchase from a retailer does require activation. Dell, Gateway, and a few other major manufacturers are hardcoding their OEM versions to look for a Dell (Gateway, whatever) BIOS and as long as you are installing on one of their machines, activation will remain disabled. Bring that OEM copy to a non-Dell machine (or if you flash the bios sometimes in the future to some generic version that removes the Dell specific identifiers) and activation will be required. Any OEM flavor purchased from like Newegg or somewhere will always have activation enabled.