the USB device drawing too much power has been disabled.

It was a loose connection!!! Thanks!!!

Thank you, this solved my question as well!

I also had this issue, just turned out to be a bad cord.

I had to add in doing a "safe" boot, and restarting, as well as removing the power cable for at least 5 minutes.

I had an iPhone 4s and the correct cord, so that is not relevant to me.

This recently happened to me, all i did was change my apple usb cable, try changing yours.

Hey guys,

i too have had this on and off since i brought my imac. And for what i have observed, im not entirely convinced it is all about the bad cable. Here is my theory; the usb on the mac is pumping too much power coupled with poor quality or defective cables = problem. Because i am finding that before i even connect in a usb there is a spark that comes out from the usb port on my imac. the same with my mac air. i don't think that should happen. so im thinking its a matter of both parties.
So i have done all of the above, PRAM, SMC, Reboot, Called apple support, hardware test.... but it does not stop till it feels like it. but when i reboot it comes right in a day or two... but whether that is because i do all of these things every time...it really could be just that it was ready to cooperate.
So i suggest; if your comp is still under warranty just get the ******* to replace the malfunction part! do it while you can!!

keep a record of it too, so that if it happens again and it is out of your original warranty become a painful costumer and demand justice for such a problem that is on going, world wide, and ignored by apple developers.

It worked. Thanks

The Problem went away, after i bought a Windows pc again. Thx apple for the watch and stuff.

Hi, I had the same problem today trying to restore an old iphone 4. I changed the white power lead and the message went away. Seems to be a problem with the cable not the macbook or phone.

try a new usb cord. this worked for me.