A mini-tower is a type of computer case that is larger than a desktop case but smaller than a full tower. It typically stands between 15 to 20 inches tall and is designed to house standard components like a motherboard, power supply, and storage drives. Mini-towers are popular for home and office use due to their compact size, which allows for efficient use of space. These cases often support a variety of graphics cards and cooling systems, making them versatile for different computing needs. Mini-towers can accommodate multiple hard drives and optical drives, providing users with ample storage options while maintaining a sleek appearance.