Disable WiFi - Fritz!box

Fritz!box

1. Open a browser and enter the IP address 192.168.178.1 to access the Hub Manager
2. Enter your username and password. The defaults are found on the back of the device
3. Click on Wireless
4. While in the radio Network section, remove the check marks next to Wireless radio network enabled for both 2.4GHz and 5GHz 
5. Click on Apply.