USB decoy to dc enclosure

I needed a mobile power supply for my Roland Mobile Cube, so I got these usb decoy usbc with dip switches, and set it to 9V, and wired it as center negative:
https://www.aliexpress.com/item/1005006179191517.html
(Attaching a picture too in case the link breaks).

Used a bit of sticker paper inside to fasten the decoy in place. And I was aiming for an m3 screw, however this is my first FreeCAD project and I didn't get it right, so used smaller screws.