A computer case is the enclosure that houses the components of a computer, such as the motherboard, power supply, and storage drives. It protects these parts from dust, damage, and electromagnetic interference. Cases come in various sizes and styles, including tower cases, mini-tower cases, and desktop cases, allowing users to choose one that fits their needs and space. In addition to protection, a computer case also plays a role in cooling. Many cases have built-in fans or spaces for additional cooling systems to ensure that components do not overheat during operation. Proper airflow is essential for maintaining the performance and longevity of the computer's hardware.