Plug and play, compatiable with With miniature buzzer Possess Power Indicator: Possess power indicator, power is supplied on the for Microbit, the indicator light is red, and the light does not light if there is no power PO Buzzer Jumper Cap: PO buzzer jumper cap, jumper cap for IObit is plugged in by default, use the music column block in for Makecode to program, make a sound, usually there will be no sound when power on) 40P for Microbit Horizontal Socket: The product use 40P for Microbit horizontal socket, come with compact size Type: expansion board Product use: computer Power supply: 5V Type: expansion board : suitable for BBC micro: bit expansion board module Featured service: support Scratch Python child programming color:Black Material:PCB size:57 x 37mm Package Contents: 1 x Expansion Board Only the above package content, other products are not included. 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.