MSI B75MA-P45 still not working USB3. Cannot detect my external HDD.
remove GenericUSBXHCI.kext on SLE, reboot, now my external HDD work again.
*UPDATED:
Using DSDT-MSI-B75MA-P45-V1.4c, Running Multibeast 5.5.3, Install USB3, reboot now USB3 running :thumbup: :headbang: