Is the USB connection between Mac Pro 4,1 Bluetooth module and the logic board the only way the module communicates with the system? Since removing my original Bluetooth module it seems there is not even a Bluetooth preference, so Bluetooth on my new combo mini PCIe card and my old Bluetooth dongle (which happily functionally coexisted with the original module) is now invisible to the system. Could it be that both the original Bluetooth module and the new one need to be connected to the USB and that the original card is the one "telling" the system that Bluetooth is present.?
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