A USB adapter is a small device that allows different types of USB connections to work together. For example, it can convert a standard USB port into a USB-C port, enabling compatibility between various devices like computers, smartphones, and peripherals. This is especially useful when devices have different USB types, ensuring seamless data transfer and charging. These adapters come in various forms, including USB-A to USB-C or USB-A to micro USB. They are widely used in everyday technology, making it easier to connect gadgets like printers, external hard drives, and smartphones to computers or chargers without needing multiple cables.