The purpose of this part is to hold the USB light on top of the Prusa i3 3D printer, making it easy to see the build volume.
The holder utilizes a hexagonal hole in the Prusa i3 top Z-axis mount.
It fits the hole and holds a USB cable.
In my case, a USB cable attaches to a Raspberry PI running Octoprint. I use a simple USB light stick on the other side of the cable. Light is on only when the 3D printer is in use.
The extruder casts a little shadow, but the print bed is much more visible now.
The part prints fine without any supports or brim. I used 0.3mm layer height and printed in PLA.
I attached .STEP files to make it easier to adjust to your own cable thickness if needed. The angle can be changed just by rotating the part in the hex hole, no model modifications required for this.