USB standards refer to a set of specifications that define how devices communicate and transfer data using a Universal Serial Bus connection. These standards ensure compatibility between various devices, such as computers, smartphones, and printers, allowing them to connect and share information seamlessly. Over the years, several versions have been released, including USB 1.0, USB 2.0, USB 3.0, and the latest, USB4, each offering improvements in speed and functionality. Each USB standard has its own data transfer rates and power delivery capabilities. For example, USB 2.0 supports speeds up to 480 Mbps, while USB 3.0 can reach up to 5 Gbps. Additionally, newer standards like USB Power Delivery allow for faster charging of devices. Understanding these standards helps users choose the right cables and connectors for their needs.