Bluetooth V4.0 + EDR Tiny USB Adapter, Class 2, Dualmode support Bluetooth 4.0 and Bluetooth 3.0, Drivers for Windows 7, Vista and XPCSR chipset CSR chipset. Firmware updates below: Please find the driver download link below. https://www.digitus.info/en/products/computerandofficeaccessories/computeraccessories/wifi/wifiusbadapter/dn302101/