Check out the steps to smoothly connect the router and to perform AT&T router settings easily:
Start by turning on the router by smoothly connecting the router power adapter to an electric socket and pressing the power button on it.
Make sure that the router power LED is lit.
Tap on the wireless signal located at the bottom-right corner of the screen.
Choose the relevant wireless network name from the available list of options.
Enter the wireless key in the required space and tap on connecting to connect the router to the computer wirelessly.