How do I know which stack I have?

From Smoothboard

If you are unsure which Bluetooth stack you have installed then follow this guide:

1. Open the 'Start Bar'

2. Select "Control Panel

3.

  Double click the "Bluetooth Configuration" icon

or

  Open "System"
  Click in the "Hardware" tab.
  Click on "Device Manager"
  Browse to your Bluetooth device
  Right click and select "Properties"
  Click on "Driver" tab.

4. Look at the 'General' and 'Driver' tabs:

Microsoft Stack

Widcomm Stack

Bluesoleil Stack