[Solved] i7 3770k Z77X-UD5H Sierra USB issues

[gandalf2003]

Hi guys,

I moved from Yosemite to Sierra a week ago following this thread advices : https://www.tonymacx86.com/threads/...77x-ud5h-1-0-asus-geforce-gtx-770-2gb.228501/

Everything seemed to be Ok until today. I discovered that USB ports are not fully functionnal.

I just tried to import about 1.5gb of pics to lightroom from a CF card (via USB2 adapter)
After copying 4-5 pictures (slower than before with Yosemite) it suddenly stops and eject the card with error.
I have plugged the adaptor on differents USB ports (in front of my case and directly behind the motherboard) but it doesn't help.

I also tried to copy the files on another machine to check if it wasn't a CF card issue but the copy is working flawlessly.
XHCI is on in bios
AHCi is off

Any advice please ?

 

[gandalf2003]

Finally ended up to make it work !
Here's what I did :

Deleted GenericUSBXHCI.kext in S/L/E (Maybe a mistake in multibeast install)
Disabled XHCI preboot driver in bios
Enabled AHCI handoff in bios

All seems to be ok now.