You can find out which particular Bluetooth adapter you have

by looking in the Windows 'Device Manager'

( 'Device Manager' is found in the Windows 'Control Panel'. )

Open the Device Manager and look through the tree-view of devices.
Locate the 'bluetooth' device which will likely be inside a 'Bluetooth Radios' category.

Right-click on the Bluetooth adapter icon to bring up the pop-up menu and then choose 'properties'.
That'll open a Properties dialog window.

Click on the 'Details' tab and from the drop-down list and choose 'Hardware IDs'

If it is a PCI-bus connected device then you should see something like this :

    PCI\VEN_8086&DEV_0162 

If it is a USB-bus connected device then you should see something like this :

    USB\VID_1234&PID_5678

The significant information here is :

VEN ID = 8086, DEV_ID = 0162 (for a PCI connected device)

VID=1234, PID=5678 (for a USB connected device)

You can then do an internet-search for  PCI vendor id database
or USB vendor id database (whichever is appropriate) and that'll take you to a web-site
where you can lookup who the manufacturer is and what particular model - e.g. chipset and model number -

of device that you have.