SAVFY&reg; USB Bluetooth 4.0 Low Energy USB Adapter USB 2.0 Wireless Bluetooth Adapter with LED Indicator For PC Desktop Computer Laptop Notebook, Compatible with Windows XP/ Vista/ 7/ 8 & Bluetooth 3.0/ 2.0, Support Bluetooth Stereo Extremely compact USB adapter; support stereo, with LED light,Safe to leave in for laptop travel. Low power Specifically works with Microsoft's new Bluetooth 4.0 Low Energy support in Windows 8 Connect with your Computer/Laptop with Bluetooth Enabled Devices such as keyboards, mice, headsets, speakers, printers, modems, serial devices, phones and more Provide transmission rate up to 3Mbps and transmission distance up to 10 meters(In free space without interference) Upgrades Bluetooth support for Windows 8, 7, Visa, XP; Windows 8 or Higher System - No additional drivers are needed (with built-in drivers, drivers not needed for most common profiles); Backwards compatible with Bluetooth versions 2.1/2.0/3.0