D-Link DIR-808L User Manual page 46

Section 4 - Security
PIN: Select this option to use PIN method. In order to use this
method you must know the wireless client's eight digit PIN. Click
Connect.
PBC: Select this option to use PBC (Push Button) method to add a
wireless client. Click Connect.
Once you click Connect, you will have a 120 second time limit to
apply the settings to your wireless client(s) and successfully establish
a connection.
Click OK to finish. This will take you to Wireless Status screen.
D-Link DIR-808L User Manual 41