A "Mid-Tower" is a type of computer case that is larger than a Mini-Tower but smaller than a Full-Tower. It typically offers enough space to accommodate standard components like a motherboard, graphics card, and multiple hard drives. Mid-tower cases are popular for gaming and general-purpose PCs due to their balance of size and expandability. These cases usually have several expansion slots and drive bays, allowing users to customize their systems. They also provide better airflow and cooling options compared to smaller cases, which can help maintain optimal performance during intensive tasks.