Based on the Bluetooth standards, phone communication happens using HFP (Hands Free Profile). A2DP mono/stereo would be used for streaming music and not for phone communication. But still, I don't rule out the possibility that A2DP mono is supported (just that it won't be used for phone communication). I have a strong feeling that the BlueNMe units are not going to support A2DP stereo due to hardware limitations (the Bluetooth controller used in the unit). All versions of Windows Automotive / Windows Auto / Windows Embedded Automotive are derived from Windows CE (now called Windows Embedded Compact). Windows CE is the base for building up most of the embedded OSs like Windows Auto, Windows Mobile etc,. Lauberhorn must be a code name used by Microsoft/Fiat for a particular release of Windows Automotive. ARMV4I is the architecture for which the OS is built. It is a limitation of Windows CE releases before Windows CE7. Even if the hardware is based on ARMV7 architecture, Windows CE6 and older releases didn't have a build system (compiler, linker etc.,) to generate instructions for architectures beyond ARMv4I (and so every hardware would work with severe limitation of not exploiting the ARMv7 core's full capability). So, we can't be sure about the hardware based on the file name.