USB applications refer to the various uses of the Universal Serial Bus (USB) technology, which allows for the connection of devices to computers and other electronics. Common applications include connecting peripherals like keyboards, mice, and printers, as well as transferring data between devices such as external hard drives and flash drives. USB ports are also used for charging devices like smartphones and tablets. In addition to personal use, USB applications extend to industrial and commercial settings. For instance, USB hubs enable multiple devices to connect to a single port, while USB cameras are used in security systems. Furthermore, USB-C technology supports faster data transfer and power delivery, enhancing the functionality of modern devices.