When everything's working right , if you use the voice button and say "Device Settings" then go to "Power Preferences" ... from there you can go to power down or restart your box. It's the exact same way that the regular cable boxes does. The Voice doesn't let you go straight to "power preferences". But then again, if you're just resetting it you can always unplug it, wait for 10 seconds and plug it back in and it will start back up and reboot.
... View more