According to the search results, the global Ultra-compact Mini PCs market is indeed growing rapidly, and the market size is expected to exceed US$2.2 billion in 2029. The following is a summary and analysis of key information:

I. Market size and growth forecast
Current market size:

• In 2022, the global mini desktop computer host market sales will be US$1.144 billion, and the Chinese market size will be US$277 million, accounting for 24.20%.

Future growth trend:

• Global market: Sales are expected to reach US$2.221 billion in 2029, with a compound annual growth rate (CAGR) of 11.45%.
• Chinese market: It is expected to reach US$595 million in 2029, and the global share will increase to 26.79%, becoming the fastest growing region.

II. Market growth drivers
Product advantages:

• Portability and space optimization: Small size (can be put into a backpack), suitable for mobile office, home entertainment and limited space scenarios.
• High integration and low energy consumption: Adopting high-efficiency processors (such as Intel NUC) and low-noise heat dissipation design, energy consumption is lower than traditional desktop computers.
• Improved scalability: supports Thunderbolt interface, Oculink interface, etc., compatible with large-screen TVs, VR devices, etc.

Application scenario expansion:

• Office field: Small and medium-sized enterprises prefer lightweight devices, supporting remote collaboration and multi-scenario deployment.
• Entertainment field: core hardware for home theaters, game consoles, and live broadcast equipment.
• Emerging fields: Growth in digital demand in industries such as education, medical care, smart manufacturing, and smart retail.

Technological progress:

• Processor upgrade: Intel, AMD and other manufacturers have launched higher-performance chips to improve the computing power of small computers.
• Storage and network technology: NVMe hard drives, 5G/Wi-Fi 6 popularization, optimize data transmission and processing efficiency.

III. Regional market structure
North America's dominance:
In 2022, North America accounted for 29.02% of global sales, mainly relying on high procurement budgets in IT, education, medical and other industries.

Potential in China and Southeast Asia:
Due to rapid economic development and digital transformation, China is expected to reach a CAGR of 13.30% from 2023 to 2029.
Southeast Asia will become an emerging growth point due to its demographic dividend and manufacturing transfer.

IV. Market competition pattern
Head manufacturers:

• International brands: Apple (Mac Mini), Lenovo, Dell, HP, etc. occupy the dominant share, focusing on performance and ecological integration.
• Chinese manufacturers: Tongfang Co., Ltd., Gigabyte, Asus, etc. seize the market through customization and cost-effective strategies.

Industry concentration:
The top ten manufacturers in the world account for 20% of the market share, but the market is fragmented, and small and medium-sized enterprises enter through segmented scenarios (such as live broadcasting and medical treatment).

V. Challenges and future trends
Challenges:

• Technical threshold: chip design, heat dissipation optimization, etc. still need to be broken through.
• Price competition: The low-end market is highly homogenized, and manufacturers need to increase added value through differentiated functions (such as AI integration).

Future trends:

• Intelligence and AI integration: Mini Desktop PC will integrate more AI functions (such as voice control and image processing).
• Customized services: Special models are launched for vertical fields such as education and medical care.
• Green computing: Technologies such as gallium nitride (GaN) power supply further reduce energy consumption.

Summary
The core logic of the global mini PC market explosion lies in the matching of its "small and strong" product characteristics with digital needs. Despite facing technological iteration and competitive pressure, with the integration of technologies such as 5G and AI, mini computers are expected to replace traditional PC in more scenarios and become an important form of computing devices in the future.