With the included, as well as the installed Windows, drivers were frequent disconnections and partially of Windows Explorer Devices crashed when calling the Bluetooth.
With Version 5.5.0.9500 of the crashes came Explorer no longer exist, but the Bluetooth keyboard unresponsive after some time and then had to be removed in Windows and added again. As soon as I activated Bluetooth at some distance on the notebook, the coupling to the keyboard was gone too abruptly.
With version 6.5.1.2300 (02/03/2012, directly from Broadcom) all these issues are resolved and for a few days everything works as desired. A pairing with the cell phone works sometimes, but mostly the keyboard is then failed again. But maybe that comes yes still a future driver update.
The adapter itself is very low, small and practical. Only the blue LED is annoying in the long run because it flashes permanently and can not leave. Whether the issues are caused by the hardware or the drivers I can not judge. But with current drivers, the function of the adapter is sufficient.
