The Onion Omega Expansion Dock provides an easy way to power the Omega with any Micro USB cable and breaks out the Omega’s GPIO pins. You can use GPIO to control external circuits or connect Expansion boards to extend the functionality of your Omega. It also comes with an on-board USB-to-serial chip that allows you to access the terminal directly from your computer.
You can use the NCD Onion Omega DOCK adapter to connect hundreds of devices, sensors, controllers with Onion Omega.
The Dock exposes several of the Omega’s features to the user:
Use it with NCD onion Omega Dock adapter For more info on onion omega please check out onion.io