I got this Kinivo BTD400 Bluetooth USB adapter and plugged it into my USB 3.0 card and rebooted my MacPro after disconnecting the bluetooth power plug inside the computer and everything worked. I have my Magic Mouse working perfectly and am charging up my Apple bluetooth keyboard before connecting it. Thanks for your suggestion to fix my issueBluetooth fix
you can use a USB Dongle compatible with BlueToolFixup.kext it work on my HP 650 G1, MagicMouse work perfectly
I use Kinivo Adaptateur USB Bluetooth