D-Link AC1900 User Manual page 19

Section 3 - Installation
QRS Mobile App (continued)
Step 4
You will see the welcome screen. Tap Start to proceed, then enter your device
password and tap . Tap once the Operation Mode screen appears.
Step 5
At this point, please ensure that your router is connected to a modem. Plug
one end of the provided Ethernet cable into your DSL or cable modem, and
plug the other end into the port marked on the DIR-878. Tap
to automatically detect your Internet connection and proceed to the next
step.
D-Link DIR-878 User Manual 15