Mac Pro MID 2010 FRONT USB DROPOUT ISSUE

Question

Mac Pro MID 2010 FRONT USB DROPOUT ISSUE

Hi guys,

I have an 8-core mid 2010 MP

Clean install of lion 10.7.3

Copying over MOV files from USB card reader plugged into the front USB Port of my machine. I get great transfers, then every 2-3 times I get a dropout, which cause me to loose and corrupt my Files.. A real scary thing when its wedding footage!!!

I also noticed my keyboard has issues every few hours of use with the front usb ports. Whilst typing this, my keyboard died twice!

Its random.. Any suggestions??? This is driving me crazy!

Also notice its both USB front ports, and the FIrewire is fine.. Sometimes it seems like the USB 2.0 ports after a fail, transfer files at USB 1.0 speeds..

Posted on May 5, 2012 8:13 PM

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Answer 1

X423424X

Level 6

14,265 points

May 5, 2012 8:52 PM in response to danielfromascot vale

How many devices do you have connected to your usb ports. There's just so much power to go around. Perhaps you need a powered usb hub.

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Answer 2

May 6, 2012 7:04 PM in response to X423424X

Well I only have keyboard and wacom at any given time for USB 2.0

I do have firewire devices being used and USB 3.0 being used also at the time of transfer.

Any more ideas? I wouldnt think that pulling data from a card would stain the power supply with even a full load of devices.

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Answer 3

May 6, 2012 7:44 PM in response to danielfromascot vale

The keyboard represents a unique problem for USB.

It uses almost all of the allotted power for a USB port all by itself. It only has enough power left for ONE low power mouse such as the Apple mouse. The second USB on the keyboard is ONLY for convenience of plugging in either left or right handed mouse. Any other device plugged into the keyboard can cause both the keyboard and the other device to malfunction.

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Answer 4

May 6, 2012 8:02 PM in response to Grant Bennet-Alder

Okay, well I wasn't aware of this.

So if I have my tablet and Keyboard plugged in to USB (seperately), and have a SD card reader downloading a heap of footage, I could encounter an issue? Although what you are stating may be accurate, I would imagine that make USB devices very limited, imagine editing from a USB hard drive with keyboard and tablet.. How do the pro do it? Im up for suggestions...

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Answer 5

May 7, 2012 8:19 AM in response to danielfromascot vale

Things that are not being constantly plugged and unplugged can go on the back USB ports, which have a separate power allotment.

NOTHING goes on the keyboard's USB ports except an Apple mouse or equivalent.

To use more devices, add a Powered USB Hub.

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Answer 6

The hatter

Level 9

60,990 points

May 7, 2012 8:44 AM in response to danielfromascot vale

CalDigit U3-ExpressCard 2 Port USB 3 (2.0... in stock at OWC

skip usb2 hard drives

CalDigit FASTA-6GU3 : 2-port USB 3.0 & 2-port eSATA 6Gb/s... at OWC

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Answer 7

May 17, 2012 7:56 AM in response to Grant Bennet-Alder

Still having issues. I have nothing but the keyboard plugged in and it still drops out and I need to unplug it and plug it back in. If the keyboard is faulty, could it be possible it can disrupt or cause issues with other associated USB ports? Really need your opinon on this.

Cheers

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Answer 8

May 17, 2012 8:00 AM in response to The hatter

I have the sonnet usb 3.0 PCI and that has issues also. I use the sonnet (recommended) USB 3.0 card reader, and that occasionally hangs on import also. This may be something to do with power? I have Lexar 400x cards, and also trancend 400x cards.. Very strange

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