This Plugable USB Bluetooth 4.0 Low Energy Micro Adapter upgrades Bluetooth support for PCs running Windows XP and later, or Linux PCs and Raspberry Pi. It is an extremely compact USB adapter, safe to leave in for laptop travel. It supports Bluetooth keyboards, mice, headsets, and more with the Microsoft built-in stack. It also supports Bluetooth stereo headsets and more with the WIDCOMM stack (install required). The adapter specifically works with Microsoft's new Bluetooth 4.0 Low Energy support in Windows 8. Support is built into Linux kernels 3.0.34 and higher for profiles supported by Linux. It offers automatic installation with Windows and updates in Windows 10 with the Bluetooth stack by default. It includes a Broadcom Bluetooth stack for Windows 8.1, 8, and 7 (available separately for 10). It works with Raspbian and Ubuntu on the Raspberry Pi. Note: This adapter does not add low power Bluetooth capacity (Bluetooth 4.0) to Windows 7 or earlier. It is not compatible with car sound systems or televisions, and does not work with Mac computers. It is not recommended for computers provided by employers. Some audio devices, such as the Bose QuietComfort 35, may require downloading specific drivers to work in Windows 7. The color of the adapter is Black.