D-Link DSL-2750 User Manual page 20

Section 3 - Configuration
Your router is now set up.
A summary page will be displayed, showing the current settings for
your WAN and 2.4 GHz wireless network. It is recommended that you
make a note of this information for future reference.
Click Finish to save your network settings.
In order for your network settings to take effect the AP will reboot
automatically.
When the device has finished rebooting the main screen will display.
D-Link DSL-2750B Wireless N300 ADSL2+ Modem Router User Manual 16