Bluetooth 4.0 USB dongle for OS X 10.8.2?

Hello, as the title says I'm looking for a Bluetooth 4.0 USB dongle compatible with OS X 10.8.2. Anyone knows one?

Thanks for the help!

After some research I found this: http://www.atpeaz.com/index.php/2012/using-unsupported-bluetooth-4-0-usb-dongle-with-os-x/
It seems that the IOGEAR, although not officially supported, works out of the box with OS X 10.8.2 and lets you wake from sleep the Mac via bluetooth. Can anyone confirm that?

No one?