IPod Nano Drawing Too Much Power From USB Port

My daughter plugged her iPod into the USB port of our iMac today, something she has been doing for months and months, and yet this time she was greeted with an error message telling her that something was drawing too much power from the USB port, so my iMac was shutting down that port.  I moved the iPod to another port -- same error message.  I moved the iPod to another iMac -- same message.  So I am confident that the culprit is the device and not the computer.  Any ideas on how to resolve this issue?  The iPod is an iPod Nano 7th Generation (current model).

My issue has been solved.  The USB cable was bad.  I am unsure how to remove my question from the forum ... sorry for taking up anyone's time.

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    Message was edited by: stenzelwa
    Message was edited by: stenzelwa

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