The stick is really small and a bit shaky because no USB compliant, but that's the point at the smallest possible adapter. Nevertheless fits perfectly for most laptops. And what is possibly some interest: Yes, he's OS X suitable. And without problems and without additional driver installation. Just plug it in. BUT: As currently all USB adapter with Bluetooth it is not suitable for handoff and continuity functions in OS X 10.10. He will indeed appear as BT 4.0 Low Energy, yet it does not work out. But that is not the stick, but to Apple. This seems to be by design. Why, can probably think themselves most ...