1, red is inserted into the microphone, which is used to connect the microphone to input sound. This interface is used to connect the subwoofer/center speaker when setting up four-channel and six-channel speakers. 2. Blue represents audio input, which is used to connect audio input devices. This interface is used as a rear speaker when setting up four-channel and six-channel speakers.

3. The green ones are audio output, speakers, headphones, etc. All in the green mouth. This interface is used as a front speaker when setting up four-channel and six-channel speakers.

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Importance of expanding computer audio interface;

In our daily life, we need to use computers to get all kinds of information and videos. As we all know, many computer hosts don't have audio playback function now, and an audio output jack is needed to connect an external audio player to listen to video content.

At work, some network teachers need an audio input jack and microphone hole to connect external cameras, microphones and headphones. , and input the text and software steps in teaching into the network for reference.