Tenda W322U User Manual page 38

It indicates that the function is enabled.
During the interval, wireless adapter can
negotiate with the Router in WPS/PBC mode.
After two minutes, WPS indicator will be off.)
1.2 Click the "Rescan" button on the UI of the adapter
to scan the wireless signal of the Router which needs to
be connected.
300Mbps Wireless USB Adapter User Guide
35