1. CMF Headphone Pro doesn't support USB audio for music playback.
2. The 3.5mm aux-in audio cable allows you to listen to music only. Please note that CMF Headphone Pro uses a three-segment 3.5mm aux-in which does not support microphone input.
Please note that if a non-standard aux-in cable (such as a 4-pole one) is used, there may be no sound output. We recommend using the official aux-in cable.