how to disable 5ghz wifi
In your browser address bar, enter 192.168. 3.1 and log in to the web-based management page. Click My Wi-Fi. Click Prioritize 5 GHz and then click Save to disable Prioritize 5 GHz.
How do I turn off 5 GHz WiFi?
To hide the SSIDs, go to Wi-Fi Settings and uncheck “Broadcast this Network name (SSID)” for both 2.4GHz and 5GHz. Click Save to save the settings as shown in Figure 1. If you wish to unhide the SSIDs, simply check the “Broadcast this Network name (SSID)” for both 2.4GHz and 5GHz and click Save.