Schitt Stack mount by kaleun96, remixed by MonolithNZ for use without Introprose RCA connector. The four screw holes for connecting the mount to the underside of the desk are suited for 4mm diameter, 15mm long, wood screws with a countersunk head no larger than 7mm in diameter.

The two files are spaced appropriately for printing on one plate, I've included the separate files if you want to print on an A1 Mini. You should be able to exclude an object when printing to make it fit, however.