If the device appears as an "Unknown Device" in Device Manager , it likely uses a CSR (Cambridge Silicon Radio) or Realtek chipset.
The Launch Studio 75270 Bluetooth adapter is specifically designed to work with the plug-and-play drivers built into Windows 10. By using the methods outlined in this guide—primarily installing the driver through Device Manager or letting Windows Update handle it—you should be able to get this dongle working without the need for a separate, hard-to-find driver. If you continue to experience issues, running the built-in troubleshooter or checking for Windows updates are your best next steps. launch studio bluetooth 75270 driver download windows 10