A:AnswerHey there! Make sure the grey cable end is in the headset, and the black cable end is in the controller. Both will click into their ports. Right click the speaker icon in your taskbar to open the Recording Devices. Make sure the ASTRO Gaming headset is the Default Communication Device. The name of the headset will vary depending on your system. If the issue persists, please feel free to get in touch with the Logitech Support team.