I have a Roku Ultra and connected to my router via Wired connection (and no I don't plan to switch it to a wireless connection).
I cannot disable the "Device Connect" option due to the included voice remote.
I live in an apartment and concerned that my neighbors will "cast" their devices to my Roku. I would like to disable it, but does that mean I have to get an IR remote?
If there is no way to disable it, Is there a way to limit what connects to the Roku Ultra (like a MAC address function).
I already disabled screen mirroring option FYI.
Roku doesnt support Chromecast so that isnt an issue.
Assuming you set Settings/System/Screen Mirroring/Screen mirroring mode to "Never Allow" that will prevent any Miracast-based screen sharing/mirroring.
You dont need to do anything further to prevent DIAL-based casting since that can only be done on the same subnet (they have to be connected to your network).