The significance of the USB standard in data transfer lies in its ability to provide a universal, standardized interface for connecting devices. It enables the transmission of data and power between devices, such as computers, smartphones, and peripherals, making it easier for users to transfer files and charge devices. USB technology has evolved through various versions, with faster data transfer rates and increased power delivery. The widespread adoption of USB has simplified connectivity, promoting interoperability and enhancing user convenience across a range of electronic products.