Which components shape the form factor of a computer case?

The form factor of a computer case is primarily influenced by the motherboard, power supply, and internal components. The motherboard dictates the overall size and shape of the case, as its dimensions and mounting points determine how the case is designed to accommodate it. Additionally, the power supply must fit into the case and is typically located in a designated area that aligns with industry-standard layouts, which also affects the internal structure and airflow design of the case.

Internal components such as hard drives, cooling systems, and expansion cards play a significant role as well, as their sizes and configurations influence how the internal space of the case is utilized. Thus, the correct understanding is that the combination of the motherboard, power supply, and internal components collectively defines the form factor of a computer case, ensuring compatibility and functionality.