USB Patch
thingiverse
Like most folk using Arduino-powered 3D printers, having installed Octoprint on a Raspberry Pi and connected it, I was faced with the irritating problem of the USB port powering the printer. This is one solution. Yes, there area already a hundred solutions, some using sticky tape, but I never liked the wheel. I think it's a silly shape and I enjoy reinventing it. So, I cut my USB cable, soldered in a DIL 4-way switch and printed up a little project box. I can now switch off the positive supply rail to my printer's USB port.
With this file you will be able to print USB Patch with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on USB Patch.