My stereo has a usb plug and two round heads. How to insert it?

The usb plug is the power plug and the round head is the signal plug. You should plug it into the speaker (earphone) jack. Leave the player on and insert the round plug into the three holes at will (it doesn't matter if it is wrong, there won't be any trouble), as long as it rings.

First, put the two speakers in the correct position. There are two sockets at the end of the speaker, one is round head and the other is USB interface. With these two interfaces, I came to the back of the computer and saw three round sockets. Then insert the round socket of the speaker into the green socket in the middle. As shown in the figure, the installation was successful.

Generally, the two plugs of computer speakers are: 5 plugs, that is, audio input plugs, which can be directly inserted into the interface of computer audio output. Generally, green represents the stereo output USB plug, which is used to get electricity from the computer and for audio. Stereo can be used if both are inserted correctly.

Methods/Steps: We see that the audio equipment comes with two sockets, one is a USB plug and the other is a metal plug. We now find that there are three round sockets on the back of the mainframe, and the bright green socket in the middle is the audio output socket. Now let's insert the round plug into the round socket in the middle.

The round plug of the small speaker is connected to the earphone hole of the computer, and the USB plug supplies power to the speaker and can be connected to the USB interface.