The Shield EDUx3IO board is an add-on for the main board. It adds a white LED, a photoresistor (LDR), and a passive buzzer, as well as pin header connectors for the servo motor, audio output, and external communication.

Useful Links
- User Guide [PDF]: package-shield-edux3io-gen4-mkii.pdf
- Product Page: Shield EDUx3IO Gen:4 mk-II
- User Guides: Shield EDUx3IO Gen:4 mk-II
- Docs and Specs: Shield EDUx3IO Gen:4 mk-II

