ajalberto: I followed this guide and end up without working usb 3 too. After searching, I tried DSDT from Hervé topic for A19 bios (I am on A21) with USBInjectAll.kext and followed instructions in Hackintool. Then I removed USBInjectAll.kext and put USBports.kext generated by Hackintool to EFI/Clover/ACP/kexts/Other, generated DSDT for CPU and all USBs work like a charm, as well as native brightness control, sleep mode etc. My setup is E6330 i5-3380m. So, you can try if it help you