D-Link AC750 User Manual page 19

Section 3 - Configuration
If the router detected or you selected Static, enter the IP and DNS
settings supplied by your ISP. Click Next to continue.
For both the 2.4GHz and 5GHz bands, create a Wi-Fi network name
(SSID) using up to 32 characters. These names will identify your wireless
network.
Create a Wi-Fi password (Network Key) (between 8-63 characters). Your
wireless clients will need to have this password or key entered to be able
to connect to your wireless network. It is recommended that you make
a record of this information for future reference.
Click Next to continue.
In order to secure your router, please enter a new password, which will
be used to access the web-based configuration utility. Check the Enable
Graphical Authentication box to enable CAPTCHA authentication for
added security. Click Next to continue.
D-Link DIR-810L User Manual 15