This adapter allows your Hummingbird Duo to work with the micro:bit. Simply plug it into the back of the Hummingbird, write programs in the block-based MakeCode environment, and download them onto the micro:bit. Once the code is downloaded, unplug your Hummingbird robot from the computer and your program will still run! Detailed directions can be found on the Hummingbird and micro:bit tutorial. 

The required micro:bit and micro USB cable are sold separately. The "micro:bit Adapter (Hummingbird Duo)" is only compatible with the Hummingbird Duo.