Final answer:
The question likely pertains to a piece of technological equipment with a protective case featuring two red knobs and four identical components, used for adjusting settings or interacting with the device.
Step-by-step explanation:
The question seems to be referencing a piece of equipment or a device commonly used in technology or engineering that includes knobs. Knobs are frequently used on various types of machinery and equipment to control or adjust settings. If the case mentioned in the question is a protective container for this equipment, it would likely have these knobs as a part of the user interface to interact with the device inside. The '4 identical things' could refer to buttons, switches, connectors, or ports that are part of the equipment's design. Without more context, it is challenging to provide a specific answer, but in the field of technology, cases with knobs and other uniform components are typically used to enclose and protect electronic devices while allowing user interaction.