The Poly Studio's camera, microphone, and speaker can be used while also allowing other devices in the room to project wirelessly, but the initial order of connection must be as follows.
if a laptop is connected wirelessly to the Poly (thus putting the Poly into Content mode with a number inside a red circle on the touch panel's Content icon), a wired laptop cannot successfully use Device Mode. To clear Content mode, disconnect every device, wired and wireless, from the Poly and wait for the red number to disappear from the Content icon.