D-Link AC750 User Manual page 38

Section 3 - Configuration
In order to secure your router, enter a new password. Click Next
to continue.
Select your time zone from the drop-down menu and click Next
to continue.
Select your Internet connection type. You can select DHCP
Connection (Dynamic IP Address) if your Internet connection
automatically provides you with an IP Address. This option is
commonly used for cable modem services. Click Next to continue.
D-Link DIR-818LW User Manual 33