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  1. #1


    Member Since
    Jun 28, 2011
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    1
    USB current overdraw with only cord connected in MacBook
    I have an older MacBook (2007, just before they started releasing the unibody MacBooks) that has suddenly started having problems with my external HDD (iomega eGo 500GB)... well not even the HDD, really, but the Y cable. It used to work just fine, no problems, but recently when I just plug the cable into the USB ports (doesn't matter if I do one port or both) I get the USB current overdraw notice - I don't even have the HDD connected on the other end of the USB cable yet, I just plug in the cable and I get an overdraw notice. Seems to be just the cable, too since I can plug in my thumb drive and I have no problem. However, the cable works just fine (usually) with my PC desktops both at home and in my lab. Should I just invest in a new cable or is it something with the MacBook USB ports?

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    50,215
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, Sierra
    Try a new cable first. They're inexpensive and can be purchased from any store that sells computer accessories. If the new cable cause the same current overdraw, the problem may be with the ports. You can try to do a PRAM reset to see if that works.

  3. #3

    hughvane's Avatar
    Member Since
    May 18, 2008
    Location
    Banks Peninsula, Canterbury
    Posts
    3,326
    Specs:
    MacMini 4.1, OS 10.11 and 10.6; Macbook Pro 8.2, OS 10.11, MacBook 4.1, OS 10.6.8
    Quote Originally Posted by chscag View Post
    You can try to do a PRAM reset to see if that works.
    Just over a month on from this thread, but I too am receiving Over Current notification, even via the battery-powered 4-port hub. It says that the hub will be deactivated, which is a nuisance, with the other USB devices plugged into it.

    I'm trying to test an Apple USB modem should I need to use dialup with my 2008 Macbook. Is it widely known/recognised that the Apple USB modem has a high power demand? Seems odd to me that an Apple peripheral will not work effectively with an Apple (laptop) computer.
    ABCDEFGHIJKLMNOPQRSTUVWXYZ
    Please post your Mac (or other) specs and MacOS version in your post, your profile or your signature. It helps us to help you better.

    I'm leaving now to go and find myself. If I should return before I get back, please ask me to wait.

  4. #4

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    50,215
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, Sierra
    I've also had difficulty powering various devices with my 2008 MacBook. The same devices have no problem when plugged into my 2011 iMac. One of the devices is an older iPod with the built in Toshiba miniature hard drive. However, I would have thought a powered hub could handle an Apple modem. Perhaps because it's battery powered it doesn't provide enough current.

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