Portability: The external frame of a mini computer usually has the characteristics of being small and lightweight, making it easy to carry and move, and suitable for use in different occasions.

Flexibility: The external middle frame can be used with different models of mini computers, providing flexible configuration options to meet the needs of different users.

Heat dissipation: The external middle frame is usually designed with a good heat dissipation structure, which can effectively reduce the working temperature of mini computers, improve stability and performance.

Scalability: The external frame usually provides rich interfaces and expansion slots, which can connect various external devices such as monitors, keyboards, mice, etc., providing more usage functions.

Aesthetics: The appearance design of the external middle frame is usually simple and elegant, which meets modern aesthetic needs and can add a sense of beauty to the user's work and living environment.