Workbench LED lighting installation

At my workplace, I connect an LED strip to a computer's 12V power supply. Every time I turn on the computer, the light turns on automatically. I put a switch in the middle so that the lights can also be switched off if necessary. I glued the LED strip to the shelf above the table (a very convenient solution).
Such models were drawn specifically, because L-shaped metal was screwed to the wooden shelf, where the switch was mounted, so the box has a place in the L-shaped cutout, on the side.