My USB cable is stuck

If you have trouble removing your USB cable, email us at contact@numworks.com with the following information:

  • Description of the problem
  • Your order number or proof of purchase

I broke my USB cable

If your cable has broken inside the USB port of your calculator, write to us at contact@numworks.com with the following information:

  • Description of the problem
  • Your order number
  • A photo of your problem