USB accessories are people's favorite tools in the digital era. USB accessories include hubs, USB sticks, U disks, chargers, data lines and other products. Its emergence has greatly facilitated our lives. The USB interface is a kind of standard interface used in most digital products, which can be connected to electronic products to achieve data communication. With the increasingly extensive use of computers, USB accessories are becoming increasingly common. Especially with the wide application of laptops, many data connections rely entirely on the use of USB accessories. For people, the USB interface is not only convenient but also cost-effective. This small metal interface is portable and simplifies the complexity of connecting many cables. Compared with the traditional connections, it is compatible with multiple operating systems, universal and powerful. The emergence of USB has enriched the ways of our life and work. It is used to provide power source and plug and play. It is very convenient to expand storage capacity, transfer data, provide other related services, and even help companies maintain information security. In conclusion, USB devices are becoming an important part of our lives. It is safe, convenient, and has powerful functions, which should make us more and more dependent on it in the digital age.