D-Link DAP-1665 User Manual page 36

Section 3 - Configuration
A summary page will be displayed showing the network name and
Wi-Fi password for the existing network. It is recommended that you
make a record of this information for future reference.
Click Finish to save the configuration.
In order for your network settings to take effect, the DAP-1665 will
reboot automatically.
When the device has finished rebooting the login page will display.
D-Link DAP-1665 User Manual 35