Plug and play, compatiable with :bitWith miniature buzzerPossess 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 powerPO 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 , 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 sizeType: :bit expansion boardProduct use: computerPower supply: 5VType: expansion board: suitable for BBC : bit expansion board moduleFeatured service: support Scratch Python child programmingcolor:BlackMaterial:PCBsize:57 x 37mmPackage Contents:1 x Expansion BoardOnly 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.