Hey There, I am Sofia Carter. The WPS stands for Wi-Fi protected setup pin; a unique 8 digit number generated by your printer to establish a successful connection with a Wi-Fi router. WPS pins act as a secret code between your printer and computer, it will protect your printing device from any unauthorized access and let the users print their documents in a secure way. You can easily find the WPS Pin on your printer and the router. If you are still confused about What is a WPS Pin and how to use it, you can simply refer to the printer user manual and get more details about it.