This is an interface expansion board specially designed for micro:bit.
It extends the pin header interface with a pitch of 2.54mm for your for micro:bit, which is convenient for various experiments.
Path: https://www.waveshare.net/wiki/Edge_Breakout_for_micro:bit
parameter:
Dimensions: 82.05mm x 36.10mm
Via diameter: 2mm
Material: PCB
colour: black
Package Contents:
1 x Edge Breakout for micro:bit