I have a Rachio irrigation smart controller, an ecobee3 thermostat, a Withings scale and a Samsung camera all running at 2.4 Ghz with no issues. For devices with 2.4 and 5 Ghz, Orbi will connect to the frequency that provides the best signal. However you will not be able to figure out the frequency they are connected to, as you only see one SSID, and ultimately you don't care as long as you get the best performance based on where devices are located.