D-Link DIR-602 User Manual page 29

Section 3 – Configuration
Click Add Enrollee to configure WPS. If the device you want to
add provides a PIN, enter the PIN and click the Connect button.
If your device supports PBC, you can click the PBC button below
to start connecting to your device.
After entering a PIN or clicking the PBC button, the router will
look for your WPS device and will automatically connect to it.
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