If you only want to listen to the audio on the computer, select "soundcore Space A40 Stereo" for the computer audio. If you need to adjust the volume, adjust both the software and the computer volume. 2. If you need to use a conference app on your computer such as Zoom/Microsoft Teams, set the input and output of the software as stated below: - Microphone on the conference software: soundcore Space A40 Hands-Free - Speaker on the conference app: soundcore Space A40 Hands-Free If you need to adjust the volume, please do so on the soundcore app. If you cannot adjust the volume on the app, select "soundcore Space A40 Hands-Free" as output on your computer and adjust the volume. 3. If you need to use an audio and video app on the computer and you cannot set the input and output on the app, open the computer audio settings and choose the correct settings: Input: soundcore Space A40 Hands-Free Output: soundcore Space A40 Hands-Free