A "Socket Type" refers to the specific design and configuration of a socket used to connect a computer's central processing unit (CPU) to its motherboard. Different socket types are compatible with different CPU models, which means that a motherboard must have the correct socket type to support a particular CPU. Common socket types include LGA, PGA, and BGA, each with unique pin arrangements and features. Choosing the right socket type is crucial for building or upgrading a computer system. It ensures that the CPU fits properly and can communicate effectively with other components. Additionally, understanding socket types helps users select compatible hardware, enhancing overall system performance and stability.