Package Included: You will get 10 pcs PC motherboard alarm buzzers, each with a length of 2.3 inches. | Main Function: These motherboard speaker will make a sound to help you determine the operating status of the motherboard. They are easy to install, equipped with a 4-pin female connector, plug and play, and quickly integrated into the speaker connector on the front panel of the motherboard. | Wiring: Equipped with a red wire for positive and a black wire for negative. However, any pole can be applied interchangeably as long as the interface is connected to the speaker. | Usage: When you start the computer, you will hear a familiar "beep" sound, indicating that the system is running normally. This sound is emitted by the motherboard speaker. If there is a problem, the sound of the motherboard speaker can help you diagnose the problem. | Quality material: These motherboard speaker are made of metal material, which is sturdy and will not break easily. It has reliable performance and can serve you for a long time.