@harshk92 In Deco app open More/WiFi and check what is says under Security. Should say WPA2-PSK[AES]. If not, touch it and it'll give you an option to change the setting.

@fatalenigma >But unless I disconnect the second switch, even the reboot will not work. My money is on "Ethernet to usb adaptor." USB devices do not necessarily getting powered off when laptop is...

@Faisalhaq See this: What are the differences between different models of Deco? E4 has 100Mbps ports, which is what limits your download speed. You need to replace it with M4 to get better download...

@IgorRJ You should have an option to disable 2.4GHz in M5. I did that on my Main network and pointed devices that can't use 5GHz to my Guest network.

No, you can not. If you can, return your new WiFi router for refund and buy an additional pair of M9 Deco units to distribute the load in your household.

You have to have Main Deco connected to modem/router by Ethernet cable.