NOTE: The steps and instructions may vary depending on your router/gateway’s model. Contact your device’s manufacturer for support.
Before you begin
Make sure that the computer you use to access the web-based setup page of your router or gateway is either wired to it directly or is connected to it via Wi-Fi.
Make sure to know your login credentials as these differ for every manufacturer. Contact your device’s manufacturer for support.
You can disable the Wi-Fi of a base station in the AirPort Utility.
Launch Applications > Utilities > AirPort Utility.
Choose your base station and click on Edit.
When prompted, enter the base station’s admin password.
Click on the Wireless tab.
In the Network Mode pop-up menu, select Off.
Click on Update. The base station will restart and load the new settings.