4Pcs Desktop Computer Motherboard CPU Internal Speaker Buzzer Beeper for Connecting the Front Panel of the Motherboard Range of use: After the computer is powered on, we all hear a familiar "beep" sound, which means the computer can be used normally. This sound is sent from this "baby"._x000D_ The red line is positive, the black line is negative._x000D_ Speaker connector for connecting the front panel of the motherboard._x000D_ The buzzer sounds can determine the working status of the motherboard_x000D_ _x000D_ Color: black+red_x000D_ material: plastic_x000D_ _x000D_ Package Contents:_x000D_ 4 x Buzzer Beeper_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_