TRENDnet TEW-687GA 1.0R User Manual page 22

[Wi-Fi Protected Setup]
There are two ways to add wireless device to your wireless network:
PIN (Personal Identification Number)
Enter the above PIN information into your AP and click the below "Next" button.
PBC (Push Button Configuration)
Select the PBC option or press the push button on your device and click the below "Next" button
within 120 seconds.
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