This Office setup product activation is the process to activate office setup using 25 digit office product key. After the activation you can use the product such as word, excel, powerpoint, skype etc.
When you purchase the office setup either online or offline, it comes with it. Office setup product key is a 25 digit alpha-numeric code that is used to activate office setup on your system. The product key can be found on the backside of the retail card and provided by your email address. Product key for office is used to download and activate office suite. It looks like: xxxxx-xxxxx-xxxxx-xxxxx-xxxxx