D-Link DIR-868L User Manual page 128

Section 5 - Security
You will then be prompted to enter the network security key (Wi-Fi password)
for the wireless network. Enter the password into the box and click Next.
If you wish to use Wi-Fi Protected Setup (WPS) to connect to the router, you can
also press the WPS button on your router at the point to enable the WPS function.
When you have established a successful connection a wireless network, the
word Connected will appear next to the name of the network to which you are
connected.
D-Link DIR-868L User Manual 124