Hello, 
  
yes, my E5450 has only USB3.0 ports. I inserted GenericUSBXHCI.kext to /EFI/Clover/Kexts/Other, but it is still the same Error. 
  
Now, i spent a lot of time in reading Hackintosh Basics an Tutorials. 
  
I have a mostly running Yosemite on my E5450. I hope you agree with this solution und you will help me to get the following devices work correct: 
  
USB3.0 (not working) 
HD4400 (1920x1080 is ok, but i can't move position of windows and at the boot process, there are some graphics errors - picures are in the appendix) 
  
I used the Yosemite HDD Installer to install Yosemite on my HDD. Then I installed Clover to get Yosemite starting. 
  
Here is the content of /EFI/ (I pressed F4 at Clover Screen )- http://www.markus-reisser.de/OSX/EFI.zip 
  
I copied the follwing kexts with KextWizzard to /S/L/E at Yosemite. 
  
DisableTurboBoostBattery.kext 
FakePCIID_HD4600_HD4400.kext 
FakePCIID.kext 
IOAHCISerialATAPI_Injector.kext 
  
When i use the patched DSDT.aml Yosemite will not start... 
  
Thanks a lot