A WPS button refers to the Wi-Fi Protected Setup button on a router or Wi-Fi extender. On your router, you'll see a WPS button (sometimes labeled with two arrows curving) that you can press.

What is the WPS Button? There's a very useful button on your WiFi router, but like most people, you may have overlooked it. We're talking about the button labeled WPS. You probably remember it by now.

WPS (Wi-Fi Protected Setup) is an alternate on-ramp to a Wi-Fi network. Thinking that clicking on the name of a network and entering its password is too hard, the Wi-Fi Alliance came up with the WPS ...