1. Connect a device, such as a computer or tablet, to the internet through WiFi or using an Ethernet cable connected to your modem.
2. Open a web browser and type http://192.168.0.1 into the web address field.
3. Log in to your modem's settings interface (Modem GUI) using your Admin Username and Password. Unless you customized this information, you can find it printed on the modem label. Note that these are different from your wireless network name (SSID) and password (key).
4. Select "Wireless Setup."
5. If you are utilizing a dual-band router, you can change the WiFi name and password for the 2.4Ghz network and the 5Ghz network individually by selecting either “2.4GHz” or “5GHz.” Some models will offer only one frequency option.
Read more: What's the difference between 2.4 and 5 GHz?