XB7-CM Question 2 WPS

I was having trouble getting my HP WiFi  connected. On my old Linksys Router, I used my WPS button.  It worked fine.  I can't get this one to work. There is no flashing light from what I am reading. I think I have it enabled in the setting on the Gateway.  I did find where I could get a PIN from the printer on the display and entered that way, so did get it paired, but how do you get the WPS button to work?