Soundlink Mini II sample rate

What audio sample rate is supported by the Soundlink Mini II via Bluetooth connection?


The drop-down menu under the Windows 10 speaker settings only shows 44.1kHz.  The drop-down menu is grayed-out, so no option to select another sample rate.  I'm looking for 48kHz support.  If the SL Mini II supports it, then I can rule the speaker out as the problem.  Except I cannot find this detail so far online.