USB thumbdrive not connecting - IOUSBFamily was not able to enumerate a device

Question

USB thumbdrive not connecting - IOUSBFamily was not able to enumerate a device

I have a macbook pro (17-inch mid 2010) with Mac OS X 10.7.5.

I've been having problems lately with it not recognizing USB thumb drives. USB mouse works fine in all usb ports.

When I insert a thumb drive I checked the console I get:

5/7/13 2:55:00.000 PM kernel: USBF:685.941[0xffffff8012c33200] The IOUSBFamily was not able to enumerate a device.

5/7/13 2:55:06.000 PM kernel: USBF:691.840[0xffffff8012c33200] The IOUSBFamily gave up enumerating a USB device after 10 retries. (Port 4 of Hub at 0xfa100000)

every few seconds.

Does any one know if this is this a hardware or software issue?

Thanks,

dave

MacBook Pro, Mac OS X (10.7.5)

Posted on May 7, 2013 1:58 PM

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Answer 1

Linc Davis

Level 10

209,547 points

May 7, 2013 6:28 PM in response to dmcloughlin-apple

Usually that means either that the device is malfunctioning or that it draws more power than the USB port can supply. Test it with a powered hub, or with another computer.

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Answer 2

May 10, 2013 9:04 AM in response to Linc Davis

I haven't tested it with a powered hub yet, but an interesting note: I tried it on a PC running Windows 7 and two other MacBook Pros and it worked fine. I also tried some other thumbdrives and they work fine with my MacBook.

It appears there is something about this device and my MacBook that isn't compatible.

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Answer 3

robzbuzz

Level 1

0 points

Nov 25, 2015 1:58 PM in response to dmcloughlin-apple

Same thing happened to me, the ADATA 32 gb thumb drive works everywhere but in a macbook air (only port) It worked 3x and then stopped showing up in all places disc utility too. In the console I get that IOUSBFamily enumeration error. However the drive works in all my other macs, as well as other thumb drives working in the Macbook air.

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Answer 4

robzbuzz

Level 1

0 points

Nov 25, 2015 2:01 PM in response to Linc Davis

How can you tell if a particular drive draws more or less power? Do the bigger capacity ones (32gb) draw more than say a 4gb one?

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