This is a case for the All in One Cable PCB created by S. Küppers (https://github.com/skuep/AIOC). This is a remix of the case by TristanMoney and has had the LED hole in the side removed (unnecessary if you print with clear PETG), and the lid stops modified to make the lid more secure and to allow easier removal of the PCB from the case.
There is also a separate ring which helps to support the connectors better. This piece requires a friction fit to stay in place, and so may need to be modified to fit your particular connectors.

VK2JPG