There are 2 parts to mount the DJI O3 Air Unit (O3 Mount Bottom & O3 Mount Top). Those are stacked on each other with the Air Unit in between (like a sandwich :D). The cables to connect the Air Unit to the flight controller are laying underneath the Air Unit.
The O3 Mount parts are clamped by the antenna mount and the frame to hold tight. This gives the Air Unit a thigh fit, even if all the parts are printed in TPU (like I did).
I added 3 types of model files for the antenna mount:
The author remixed this model.