I solved the problem in a different way on my Mac Pro 3.1 Mac Pro by running an external bluetooth connection. I simply unplugged the internal Mac BT antenna wire and connected a purchased blue tooth wire to a hole I drilled in a PCI slot blank and hooked up a external blue tooth antenna. Both were available cheap on Amazon. It was much easier to do after I removed the BT Mac Pro card, attached the antenna wire and then reinstalled the card.
All bluetooth devices work like a charm now, especially my magic mouse which was the one having the biggest problem. Pointer is smooth as butter now No need for USB devices and drivers, even though it's an easier solution than diving into your Mac Pro.
All bluetooth devices work like a charm now, especially my magic mouse which was the one having the biggest problem. Pointer is smooth as butter now No need for USB devices and drivers, even though it's an easier solution than diving into your Mac Pro.