Core Insights - The article discusses a profitable side business involving the sale of USB drives preloaded with operating systems, highlighting the simplicity and low cost of entry into this market [3][4][5]. Group 1: Business Model - The business model involves purchasing USB drives at a low cost (around 3-5 yuan each) and selling them for a profit, with potential earnings of over 40 yuan per unit sold [10]. - The USB drives are marketed as convenient solutions for users needing to reinstall operating systems, which is a common issue for computer users [4][10]. Group 2: Operational Steps - The process includes sourcing USB drives from platforms like 1688, installing operating systems from reputable online sources, and acquiring serial numbers from platforms like Taobao [5][6][8]. - Marketing strategies involve utilizing social media platforms such as Douyin, Xiaohongshu, Xianyu, and Taobao to attract customers, with Douyin noted for its high traffic [8]. Group 3: Challenges and Considerations - The main challenge lies in effectively promoting the product to potential customers, as the technical aspects of creating the USB drives are relatively straightforward [11]. - The article emphasizes the importance of self-initiative and experimentation in determining the viability of this business opportunity [11].