MacPro 3.1 USB hard

I have the problem on USB ports in my MacPro under MacOS X 10.11.x 3.1

I'm updating my Mac 10.6.8 to 10.11.6. The problem is that when connect the USB flash drive (extFAT) do not see the drive. Or maybe after you disconnect and reconnect the keyboard/mouse system see new device.
Apple menu > about this Mac > more info > system report > USB | too not see USB device. As if the USB ports on the system are totally cut :-/ 10.6.8 for any problem.

MacPro 3.1 2.8 (8 cores), 14 GB of RAM, 8800 GT 512th (980W power supply original)-CZ language mutation
3 x 3.5 "HDD (500,500,320). Without the PCIe cards (USB, LAN, SAS, SATA, etc..)
Boot ROM: MP31.006C.B05
SCM: 1.25f4

Reinstall MacOS, reset memory NVRAM or SMC does not work :-/

I'm testing and download "USBEHCIPCI.kext.zip" from http://www.insanelymac.com/forum/topic/306777-guide-usb-fix-el-capitan-1011/ and with the "patch" to work my rear usb (max. 1 MB/s) but not before USB ports.

Thank you all for the help

I don't have a solution for you, but I think you can get more answers if you post this in the Mac Pro forum, because it can be specific to this material.

Tags: Mac OS & System Software

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