
The device won't even notice that you removed the RF module and it will report on its own web page that your Wi-Fi network is still active.

Put the covers back and screw down the screws without the RF module and use the device as a regular modem/router. This is reversible process and you may put everything back the way it was but I sincerely doubt that anyone would do that unless you must return the equipment back to Comcast. Here in a few steps I will show you how to permanently disable the Wi-Fi section of this modem/router. Unfortunately that solution is not permanent and if you reset the device, you will be on Comcast CSR mercy again. To be honest, some Comcast customers were able to make this device to work as a plain modem (Bridged Mode) thus disabling the Wi-Fi portion and the router just by calling Comcast customer service. Unfortunately Comcast customized firmware has restricted the options that users can do to make changes to such devices by using the usual web interface.

Most people complain about very low quality of the wireless portion of this device which also applies for other makes like Technicolor, Cisco, etc. While most people have their home networks configured nicely, when it comes to the cable modem Comcast often ships devices like this which unfortunately cannot be reconfigured easily if at all. This is about modifying my SMC-D3GNV which is a Cable Modem, a Wireless Router and a VOIP telephone adapter.
