Your LapTop, Ultrabook, Computer to Communicate With Bluetooth Enabled Devices Such As Smart Phones, Bluetooth Supported Printers, Bluetooth Headsets , Speakers and Bluetooth gaming devices * Latest Bluetooth Specification Class 2 Bluetooth v 4.0 Smart Ready Adapter with low energy technology. Backwards Compatible * Bluetooth Adapter 4.0, Bluetooth Headphones, Bluetooth Speakers, Bluetooth Windows 7 Compatible, Bluetooth Keyboard, Bluetooth Mouse, USB Bluetooth 4.0 * Compatible with Windows 7/Vista/XP Built with the latest Bluetooth specification v4.0 Class 2 * Backwards compatible with Bluetooth versions 2.1/2.0/3.0