Power surge to a USB port

I plugged my brand new iPhone 5 USB cable into my laptop and it displayed a message about a power surge to that port. i dismissed the message and removed the cable. Now none of my USB ports are working.

Are you using an official Apple wall charger and an official apple usb adaptor? Some of the unofficial ones have been known to do that. If it's an official one take it down to the Apple store to get a replacement. If the problem persists it could be related to your phone.

Similar Messages

  • Power Surge on the USB Port.

    Well, for the first time ever in my 2 years of having this IPOD plug for my 5th Gen...I wanted to upload some pics on my ipod, but i plugged the port into the computer and the other part into my ipod, and it said my port had a power surge of some sort. So i can't charge my ipod via computer, but it works in my ipod player (which is my deck that i have in my bedroom to play music through speakers) and it works...And other USB items (i.e webcam) work in any port...So its seems its just the plug.
    It all of a sudden worked when i just plugged it in as i wrote this to be sure what it said, but does anyone know why this happened?

    When you say "port" do you mean the iPod cable that has a dock connector on one end and a USB connector on the other end? When you have your iPod connected to your iPod player does the player have a dock connector on it such that the iPod plugs directly into the player? If the answer to both of these questions is yes then I would suspect that the iPod cable is bad or on its way out. Another test of the cable would be to connect it to an iPod power adapter that plugs into the wall and see if the iPod charges.
    The other possibility is that there are other USB devices connected to your computer and when the iPod is connected the USB ports on the computer are unable to supply sufficient power to all of those devices.

  • "iPad not charging Connect to a power adapter or a USB port on this mac to charge" Maverick issue!

    Ever since we updated to mavericks our deployment of 60 iPad's flashes "iPad not charging Connect to a power adapter or a USB port on this mac to charge" on the screen every time one is plugged in. It is a false alarm because the iPad does in fact trickle charge and it does update the device like it is supposed to. At this point it's more of an annoyance then an actual problem. However I would like it to stop popping up every time one is plugged in.
    Does anybody have any ideas to stop it?

    Your computer USB port typically provides only 2.5W of power. iPads require 10-12W of charging power. That's why you get the "Not Charging" message. However, the iPad is charging, but much slower. There's no way to stop it.
     Cheers, Tom

  • How much power can deliver the USB port on AirPort Express?

    I am developing an appliance that requieres access to a WiFi router and a power source (UL 60950-1 compliant) of less than one watt (100-200 mA @ 3.3V) to power my own WiFi device, and the AirPort Express can be the right device to solve both problems with minimun overhead. The problem is that I cannot find the specification of the current / power limits of its USB port.
    To check if it can provide the usual five unit loads, I tried to charge an iPhone 4, but it fails showing the message "Charging is not supported with this accessory", and an external 2.5" HD which requires 500 mA causes the following message to appear on AirPort Utility:
    USB Power
    A device connected to this AirPort base station's USB port requires more power than this AirPort base station can provide. Plug the device into a power supply if possible, or connect it to a powered USB hub.
    Any insight will be welcome.

    Never mind - I tried "rebooting". I hate it how that always works!

  • HT1476 Power Surge on the hub port?

    I'm trying to plug device into my pc and it is giving me this message above..."Power Surge on the hub port"  It is not readin the device.

    What's giving you the error iTunes or your PC? If it's your PC then you may need to restore.

  • Will power interruptions cause iMac usb ports to fail?

    When electrical power is disrupted and subsequently restored can iMac on board USB ports be damaged to the point of total failure? If so, how can these
    ports be properly protected? Thanks for any advice.

    APC is the big name. You can find them at all sorts of places. They make quite a few models.  If you live someplace where power failure is common it's probably best to shut down before leaving but assuming your home, if your battery backup is good for 10-20min tha'ts plenty of time to shut down. I have my computer and external drives on battery backup. My second monitor, printer and such are simply on surge protector circuits. Most UPS units have some plugs that are just surge and other plugs that include battery backup. You will want to find out how many watts your computer uses and any other peripherals you use to guage which battery backup system you need to provide as many minutes of backup as you want.

  • Mid 2011 Macbook Air - Yosemite keyboard and trackpad stopped working, the only button that worked was the power button, only one USB port works.

    I have a Mid 2011 Macbook Air.
    Upgraded to Yosemite last week.
    Three days ago I was using my Macbook Air for the first time since upgrading to Yosemite. I had been using my Macbook Air for approximately 30 minutes, I was using safari and the keyboard and trackpad stopped working (would not respond). The only button that worked was the power button.
    I rebooted and they were still not working. I plugged in a USB mouse and external USB keyboard, only one USB port would work (the Left USB port if looking at the screen) so I had to swap between keyboard and mouse.
    After logging in there is a bluetooth icon at the top of the screen with a sawtooth line through it. Bluetooth is unavailable and the bluetooth icon is missing from the system preferences menu.
    If I run a hardware test by holding D (on USB keyboard) at startup it says that no problems are found and at the conclusion of the test the keyboard and trackpad start working again. When I log on the bluetooth is working again.
    I shut down the Macbook Air and when I started it again the keyboard and trackpad and right side USB ports were all not working again. I logged in using the USB keyboard and mouse and the bluetooth not available sawtooth icon had returned.
    I ran the hardware test again and at the conclusion of the test the trackpad and keyboard started working again.
    I have tried deleting com.apple.Bluetooth.plist and com.apple.Bluetooth.plist.lockfile from /Library/Preferences/ and tried resetting SMC and Power Functions but this did not fix the issue. The only thing that seems to work is running a hardware test - obviously I don't want to do this every time I use the computer.
    I do not believe any hardware is faulty/damaged - I think it has something to do with bluetooth/Yosemite.
    I do not have the Macbook with me at the moment, if you have suggestions that I can try or additional checks/info you require please let me know and I can get back to you.
    Thanks,
    John

    Hi!
    I have exactly the same problem, and I can't find any solution.
    I can't even track down the root of the problem: the Bluetooth/Wifi module? The trackpad? The keyboard/top case? The logicboard?
    I've tried all the usual: SMC/PRAM reset, clean install, kext cache clearing.
    Any suggestion is greatly appreciated!

  • The device was drawing too much power and that the USB port will be shut down

    New to forum, help,
    Cannot add a USB hub, powered or not, keep getting message
    The device was drawing too much power and the USB port will shut down.

    Hi
    Is your machine connected to AC power? If not, connect it, and it should work. You may also try resetting the SMC.
    If it still doesn't work when connected to AC, then the hub most likely is drawing too much power (i.e you have too many devices connected to it)
    Taylor

  • Can you turn power off of the USB ports

    I have a powerbook g4 800 and it has an external fan that is powered by USB. When I put the computer to sleep and have the power adapter not plugged in, the fan still gets power. So I occasionally have the power completely drained after the laptop was in sleep. Usually I remember to shut off the fan, but it's an extra step that seems like it could be solved by setting something somewhere to power down USB on sleep.

    Unfortunately the Mac holds the USB ports in an active state to allow mice and keyboards to wake the machine - I don't know of any way to change this.

  • Power off a specific usb port

    Hello guys I'm trying to power off one usb port of my laptop. So far, I only managed to power off one  of them through this command:
    #off:
    echo "1-1" > /sys/bus/usb/drivers/usb/unbind
    #on:
    echo "1-1" > /sys/bus/usb/drivers/usb/bind
    The problem is that I can't get the other usb to power off. I also tried with this command
    echo suspend > /sys/bus/usb/devices/1-1/power/level
    bash: echo: write error: Invalid argument
    as you see unfortunately I get an error..
    Any suggestions?
    Thanks

    Does it have the same file structure? Have you tried powering off a USB port, that has, say, a mouse plugged in or a keyboard?

  • Can a power surge damage the ethernet port?

    My internet was working fine, then a storm came in and the lights flickered. Since then my ethernet port says there is no connection even though there is. I have replaced the router and checked the connection and cable on another computer and they work fine, but the imac no longer recognizes my cable plugged into the port, it just says nothing is connected.  I have a surge protector on my imac but not on my router, is it possible a charge could have traveled up the line and fried the port? 
    I can't find any other reason to explain why it stopped working. Does anyone have any tips on getting the ethernet back up and running?
    thanks

    Yes, that can easily happen if the equipment is not protected in any way.

  • Power surge error on Hub port

    Hi Everyone,
    I am getting the following error on my X1 carbon laptop, I tried to change the power on the wireless but i am still getting the error.. Is it any hardware issue .. ? I tried searching on diffrerent blogs but couldnt find a proper solution. Please let me know if anyone has solution for this issue. 
    Thanks

    Try plugging it into a different computer. Also, check for black marks on the charger. If that doesn't work, get a new charger or book an appointment at a Genius Bar.

  • My display is black but all of the power is working and usb ports please help

    I HAVE MY DISPLAY PLUGGED UP AND IT JUST HAS A BLACK SCREEN BUT EVERYTHING IS WORKING ON THE ACTUAL DISPLAY PLEASE HELP

    Hello there Kevin,
    I was researching the issue you describe and found 2 resources that may help. First there is this section from Apple Cinema Display: Troubleshooting steps found here: http://support.apple.com/kb/HT2810
    No image on the screen
    Make sure the computer is turned on.
    Make sure the power cord is plugged in properly.
    Make sure the display cables are connected to your computer properly.
    Make sure the DVI or Mini DisplayPort display cable is connected securely.
    Make sure your computer is not in sleep mode.
    Make sure the brightness is set properly. The brightness control is under the right front edge of the display.
    Check for and install all available software updates. Software updates may provide solutions to many common issues.
    Note: If the display power cord is plugged into a grounded wall outlet or power strip, find out if power to the outlet has been interrupted. You can test the outlet by plugging in something that you know works, like a desk lamp or radio.
    If those steps don't get the display working then here is another article, with some pretty in depth troubleshooting for displays named Apple computers: Troubleshooting issues with video on internal or external displays from http://http://support.apple.com/kb/ht1573
    Cheers,
    Sterling

  • Power surge killed ipod?

    Well, I have a 30GB iPod classic, worked fine every since a friend gave it to me, battery was getting a bit old, but it worked fine. Well one day I plugged it into my dads computer and a little pop up told me there was a power surge in the USB port, and ever since then, It wont turn on. I plug it into the wall or my computer or anywhere and it wont turn on. I've tried resetting it with the Menu and Select button. I don't know what to do, is it dead, or fixable? I had a lot of stuff stored on there. Thanks in advance.

    Did you use the iPod in an unsupported docking system say for a hifi ? If so, you may find that the connecting socket on your iPod is a little slack. Try holding your usb cable on to the iPod with a couple of elastic bands before you plug it into your computer. With iTunes up and running and your iPod connected this way, toggle the hold switch and restart your iPod - does it register now?
    nevwebb

  • Power Surge on USB hub port

    I bought a Nano about a month ago. When I first hooked it up to my laptop, it worked fine. Now I can't get it to even connect. When I plug in the USB cable to any of my USB ports (with or without the Nano attached), I get the pop-up on the task bar that says there is a "Power surge on the USB hub port" and that I need to reset the port. I am assuming that there is some setting somewhere that needs to be changed, but I just can't find it in any of the Apple Support pages on the web.
    Does anyone have any ideas for me?
    Thanks,
    Jeff

    Hi - Had the same 'Power Surge on USB' problem - thought it was curtains as I could do nothing to get my 18 month old nano to sync or even charge from my computer. I did however manage to get it to charge from the mains with someone elses charger so I tried their sync cable into my computer and - hey presto! - everything back to normal! Then re-tried my sync cable and again 'Power Surge.....' - so maybe a new cable is the answer - hope it works for you - Good Luck

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