A:Answer Hello. The G635 is compatible with mobile devices using the 3.5mm (aux) cable. In 3.5mm (passive mode), the G635 gaming headset will operate in passive, unpowered mode. The headset will play audio from any device connected through the 3.5mm input on the headset. Features that require power, including 7.1 surround sound, custom sound profiles, on-headset buttons, volume wheel operation, and button/lighting customization functions are not available in this mode.