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Bluetooth adapters are compact devices designed to enable wireless communication between Bluetooth-enabled devices, such as computers, smartphones, tablets, and other electronics. They typically use USB or PS/2 interfaces to connect to a computer, providing a convenient way to add Bluetooth functionality to older systems that lack built-in support. These adapters enable various Bluetooth applications, including data transfer, audio streaming, and device synchronization. They can be used to connect external devices such as headphones, speakers, keyboards, mice, gamepads, and smartwatches to a computer or other host devices. Some models also support longer ranges, making them suitable for industrial, commercial, or home automation applications. Bluetooth adapters come in different classes based on their power consumption and range. Class 1 adapters offer the longest range (up to 100 meters) but consume more power, while class 2 adapters (up to 10 meters) and class 3 adapters (up to 1 meter) have lower power requirements. In summary, Bluetooth adapters are versatile, easy-to-use devices that facilitate wireless communication between various electronic devices, providing users with a seamless experience for data transfer, audio streaming, and device control.