Material: Plastic and MetalColor:See picturesUse: Power on the computer, we will hear the familiar sound of "beep" a sound, generally indicating that the computer can be used normally, the sound is emitted from the "baby."Red is positive, blaline is negative (in fact, regardle of the positive and negative, as as the interface connected to the Speaker can be used)Board alarm tone DescriptionAWARD BIOS ringing of the general meaning is:1 short: the system starts properly, which we hear every day, but also that machines without any probl.2 short: General error, please enter the CMOS Setup, reset the incorrect options.1 1 short: or motherboard error, try for a memory, if that does not work, had to rep the motherboard.1 2 short: Monitor or display card error.1 3 short: Keyboard controller error, chethe motherboard.1 9 short: board F or EPROM error, BIOS damage. For the bloF try.Continuous sound (beeps): memory is not seated or damaged. Re-insert the memory, if that does not work, rep only a memory. It kept ringing: power supply, display and graphics card connected.Cheall plugs.Repeat short ring: Power probl.No sound No display: power probl.Size: See the pictureQuantity: 1PcNo retail packageNote:Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you!!