ASRock Z77 Extreme 4: USB 3.0 Ports not working

[eroxm]

My setup is running quite well by now, what's not working is the USB 3.0 ports. I've made two screenshots of the system profiler:

 

 

 

I think what's shown here is the Z77 integrated USB 3.0 ports. The board also features an ASMedia ASM1042 for 2 additional ports, but without the suitable kext, it shouldn't be recognized by the OS. When I plug in a USB flash drive or hard drive, the LED of the drive is on, but it doesn't get recognized by the system, it just simply does nothing. I tried the rear and the front ports. Has anybody a hint how I can get this to work? If somebody needs to take a look at the DSDT or ioreg, I've attached them to this post.

 

Thanks in advance for your help!

 

eroxm

 

eroxm_dsdt_ioreg.zip

[^Andy^]

The board also features an ASMedia ASM1042 for 2 additional ports, but without the suitable kext, it shouldn't be recognized by the OS. When I plug in a USB flash drive or hard drive, the LED of the drive is on, but it doesn't get recognized by the system, it just simply does nothing. I tried the rear and the front ports. Has anybody a hint how I can get this to work? If somebody needs to take a look at the DSDT or ioreg, I've attached them to this post.

 

Thanks in advance for your help!

 

eroxm

 

Try these modified drivers http://www.mediafire.com/download.php?dxcetph021ft8uy

[klhd]

Try these modified drivers http://www.mediafire...dxcetph021ft8uy

I tried several usb3.0 driver for my asrock z77 extreme 4 (with ML 10.8.2). But they all caused boot errors (i was not able to boot again into osx, not even by deleting the kext).

 

Does this one work flawlessly for you?