The USB microscope is designed to display simple magnifications on a computer screen. The USB microscope is connected to a screen. This allows a large presentation for several people. In addition, the USB microscope can illuminate the test objects by means of eight built-in LEDs in such a way that a perfect representation is possible. These LEDs are arranged in such a way that uniform illumination is ensured from all sides. The light intensity can be adjusted manually, so that there is no over-exposure.