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High Sierra 10.13.3 Build USB 3.0 issues

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Marklc40

Marklc40

Joined
May 5, 2018
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11
Motherboard
designaire x99
CPU
i7 6900k
Graphics
980 ti
Mac
  1. iMac
  2. MacBook
  3. MacBook Pro
  4. Mac mini
  5. Mac Pro
Classic Mac
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Mobile Phone
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Recently upgraded my hack to High Sierra, but now my USB on motherboard is messed up. Seems to be power related as the more devices attached the worse it is, even crashes. I added a vantec 3 port USB pci card, and it works fine. Tried to add a second vantec with 2 external and 2 internal and it does not work properly. It will power and eventually boot the usb 3 drive, but after much time. The data rate is sub USB1. I have an i7-6900k on a designaire x99 motherboard/nvidia 980ti, running 10.13.3. FYI-tried to update to 13.4 but does not take. Tried from website and downloading and launching from desktop. adding config plist
 

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I am getting desperate for help.
Marklc40 said:
Recently upgraded my hack to High Sierra, but now my USB on motherboard is messed up. Seems to be power related as the more devices attached the worse it is, even crashes. I added a vantec 3 port USB pci card, and it works fine. Tried to add a second vantec with 2 external and 2 internal and it does not work properly. It will power and eventually boot the usb 3 drive, but after much time. The data rate is sub USB1. I have an i7-6900k on a designaire x99 motherboard/nvidia 980ti, running 10.13.3. FYI-tried to update to 13.4 but does not take. Tried from website and downloading and launching from desktop. adding config plist
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