Right-click it and select > Search automatically for drivers . Manual Search (Hardware ID) :

Most devices associated with the 75270 listing use the or Realtek chipsets. Follow these steps to get your Bluetooth working:

This specific listing (75270) refers to a certification for a Bluetooth 5.0 Low Energy (LE) controller. These adapters often appear as "Unknown Device" in Windows Device Manager and won't work until the proper driver is installed. Quick Fix: How to Identify and Install the Driver

In Device Manager, right-click the unknown device and select .

: Plug in the dongle and go to Settings > Windows Update > Advanced Options > Optional updates . Windows may already have the driver waiting for you. Use Device Manager : Right-click the Start button and select Device Manager .