This project box is designed to house the Phantom YoYo PCM2704 USB Digitial Audio Converter (DAC) Circuit Card Assembly (CCA).
There are two pieces (1) the box (sides & bottom) and a snap-tite lid.
The card will snap into place with some gental pushing, but if can be held tightly in placing using screws (see pictures - in this case I used CD-ROM style mounting screws).
The lid is held in place by friction.
The sample in the sample in the picture was printed in 'quick' mode, and didn't sand or take paint very well - it should look better on a finer setting.
I was able to orient the STL in the slicer (CURA) so that I didn't need any support material.