The most commonly used are grass green and pink, and grass green can be plugged into external devices such as headphones and stereos; The pink jack can use input devices such as microphones.

Audio interfaces are usually distinguished by colors, mainly grass green, pink, blue, gray, black and orange.

Definition of various colors:

1, grass green: audio output port. Mainly used to connect headphones or speakers.

2, pink: microphone port. If the netizen can't hear the sound, it is the problem of this interface.

3. Blue: Audio input port. The audio output terminal of MP3 and tape recorder can be connected to the computer through double-ended 3.5mm audio cable, and then processed or recorded by the computer, which is not used by ordinary people.

4. Gray: Surround one side of the speaker connector (under the eight-channel setting).

5. Black: rear surround speaker connector (under four, six and eight channel settings).

6. Orange: center/subwoofer interface (under six-channel or eight-channel setting).

Extended data

There are four possible reasons for the silence:

1. When the metal piece of the earphone jack moves, use the refill to toggle the earphone jack to make the metal piece inside bounce.

2. You can use a cotton swab dipped in alcohol to rotate and wipe the earphone plug and mobile phone jack (the plug or jack may be oxidized), and then try to insert it again.

3. Turn off the phone and restart it. If it still doesn't work, back up the file and restore the phone to the factory settings.

If it still doesn't work, the circuit in the speaker is broken due to collision, so it is recommended to send it for repair.