This is a 3D printed case/enclosure to suit the RFD900 Series of Datalinks it helps protect the board as well as making it easier to mount.  It is also great because it gives some train release for the USB cable as well as not allowing accidental removal from the RFD900 Please note: This part is 3D printed so surface is not as smooth as injection molded parts.

If you own a drone, it’s important that you understand the rules that keep you and others safe. Visit knowyourdrone.gov.au to find out more