Kossel mini panel for usb and DC power connection

You need:
M4 screw *2, M4 square screw nut *2, M3 screw *2, one usb extension cable, one DC jack

It‘s difficult to screw it tightly to the aluminium extrusion without needle-nose pliers. But it's OK if the screws are loose, then you can slide the panel to where you like.