A USB Bluetooth adapter is a small device that connects to a computer or other electronic devices via a USB port. It enables wireless communication between the device and Bluetooth-enabled gadgets, such as headphones, speakers, or smartphones. This allows users to transfer files, stream audio, or connect peripherals without the need for cables. These adapters are particularly useful for older computers that do not have built-in Bluetooth capabilities. They are typically plug-and-play, meaning they can be easily installed without complicated setup processes. Many adapters support various Bluetooth versions, ensuring compatibility with a wide range of devices.