Step 1: Open your web browser and enter http://dlinkrouter or http://dlinkrouter.local or http://192.168.0.1 into the address bar.

The default username is Admin and the password is blank (nothing). Click Login.

Step 2: Click the Setup tab at the top and click Wireless Settings on the left side
Step 3: Click Manual Wireless Network Setup

Step 4: Under the Wireless Network Settings, Choose your desired 802.11 Mode (2.4GHz band and 5 GHz band are each set the same way but 5GHz has a and ac instead of b and g)

