Material: 100% brand new high-quality plastic and metal, durable, fine workmanship, corrosion resistance, more stable performance, stable performance, high reliability. | With BIOS alerts, you can easily get feedback, quickly find problems, or ensure normal startup without installing multimedia; through computer power supply, we will hear familiar sounds. | Wiring: red is positive and black is negative (in fact, both positive and negative wires can be used as long as they are connected to the speaker interface). Two 6cm / 2.36 inch red and black wires can keep the PC shell clean and tidy. | The 4-pin female connector is directly inserted into the speaker interface of the main board, which is convenient to insert into the speaker interface of the front panel of the main board. These speakers are used to obtain the beep specification from the main board alarm system and other electronic products. Keep the cables inside your computer cabinet in order. | In many cases, you may not need a complete set of multimedia speakers on your PC or office environment. You can still hear this PC boot specification boot with built-in speaker installation to ensure all work results are accurate. You can also hear a beep confirm when you plug in the USB device.