The micro: bit expansion board integrates 4 Grove connectors. If more Grove interfaces are needed, the reserved 4 pins can be used. In addition, we have reserved some pins with special functions, such as P0, P1, and P2 with touch functions. Therefore, you can build projects just like a fruit piano.
Or you can simply use a crocodile clip to connect the pins, just as you can do on a micro: bit. Furthermore, with the on-board micro USB interface, you
can power the micro: bit from grove shield.
Four Grove ports cover different interfaces
The USB port on the gold finger board for the alligator clip and 4mm banana plug can power your micro: bit