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Computer cases are protective enclosures designed to house and safeguard computer components such as the motherboard, processor, memory modules, storage drives, power supply, and expansion cards. They serve as the physical foundation for a computer system, providing structure, organization, and ventilation. Constructed from materials like steel, aluminum, or tempered glass, these cases come in various sizes, known as form factors, to accommodate different types of motherboards and internal components. Common form factors include ATX, Micro-ATX, and Mini-ITX. Computer cases often feature multiple bays for drives, slots for expansion cards, and cutouts for cable management. Some models also offer tool-less designs for easy installation and removal of hardware. In addition to functionality, computer cases are available in a wide range of styles, colors, and aesthetics, allowing users to personalize their systems according to their preferences.