The IOGEAR GBU521 Bluetooth 4.0 USB Adapter is a versatile and compact device designed to add Bluetooth connectivity to desktops, laptops, or other compatible devices. Featuring Bluetooth 4.0 technology, it typically offers enhanced data transfer speeds, improved range, and lower power consumption compared to previous Bluetooth versions. The GBU521 typically features a USB interface for easy plug-and-play installation, making it simple to upgrade devices to support Bluetooth connectivity. Its compact and portable design makes it convenient for use at home, in the office, or while traveling. Overall, the IOGEAR GBU521 Bluetooth 4.0 USB Adapter offers users a reliable and efficient solution for adding Bluetooth connectivity to their devices.