D-Link AC750 User Manual page 15

Section 3 - Configuration
3. Select your Internet type from the drop-down menu: DHCP (dynamic) is
most commonly used with cable Internet, PPPoE (common with DSL), or
Static.
If you selected DSL (PPPoE), enter your PPPoE user name and password
supplied by your ISP (Internet Service Provider).
D-Link DIR-813 User Manual 11