KEEDA&reg; Mini USB CSR Bluetooth 4.0 Dongle Low Energy Micro Adapter Transmitter (4.0) Enables your PC or laptop to wirelessly communicate with Bluetooth-enabled devices, like Smartphones, tablets, keyboards, mice, speakers, printers, headsets and more Upgrades Bluetooth support for Windows 8, 7, Visa, XP or Linux PCs. Plug and play Simplified use with an attractive user interface. An included setup CD guides you through installation and connecting with Bluetooth-enabled devices in minutes Latest Version 4.0 Class 2 Smart Ready Adapter with Low Energy Technology, backwards compatible with earlier Bluetooth versions1.0 ,2.0 and 2.1 Premium CSR Harmony Application included allow Microsoft Office and other Applications Access Bluetooth Connection Directly