IPhone not charging, "USB port draws too much power"

I've tried charging my iPhone with 3 different cables, 3 different socket chargers and my macbook.
Won't charge, the socket chargers turn off, the macbook displays the aforementioned error.
I haven't dropped it, soaked it in water or anything.
Unfortunately my year warranty expired last month.
Suggestions?

Welcome to the discussions,
have a look at this article, http://support.apple.com/kb/TS1286 , "Symptoms...An alert message indicates the USB device cannot operate because it needs more power than is available."
And
If the issue persists and you are using a Mac, try resetting the USB connection by following the steps in http://support.apple.com/kb/HT1317

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USB port drawing too much power. The device that is plugged into it will be

I get this strange message every so often, sometimes more often than other times. It says:
USB port drawing too much power. The device that is plugged into it will be deactivated.
There are only two things plugged into the USB-The keyboard and mouse. When I get this message, the mouse freezes. If I jiggle the mouse cable where it is plugged into the USB, it comes back and everything is fine until this message comes up again.
Ever seen this before? What did you do?
Thanks for your help.

Ahh I guess I could have figured that out by reading your hardware tag huh...
So it's giving you the message when booting up from a cold system with NO devices attached? (Not even the keyboard and mouse?).
How long before you get this message?
After you get this message, if you plug the mouse in to either USB port (As each port is a seperate bus), to clear the alert, and go into About this Mac, and More info, if you expand the USB info for each bus. Is there anything there that appears to be out the ordinary? (IE Only showing one bus, Showing a device plugged into a bus that isn't plugged in?)

New MacBook, New ipod, "Usb port drawing too much power" message?

I just got a new MacBook and ipod Nano, and when I plugged the ipod into the usb 2.0 port, a message came up saying a usb port was drawing too much power and would be shut down. i'm charged and plugged in, is the wire messed up, the port, or the nano?
-E

strange - try the second port.
possibly a bad cable.

Cannot sync my iPhone 5s, macbook usb is drawing too much power

I have a macbook pro, 2.8 ghz intell core i7 and a new iphone 5s. Each time i try to sync using the apple usb cord, I get an error saying that a device is drawing too much power and the usb has been disabled. Help! I am trying to get my pcitures on my phone and can't do it without sycning.

Hey vluciay!
Here is an article that describes this situation and can help you troubleshoot the issue:
USB: Troubleshooting Error Messages
http://support.apple.com/kb/TA25618
Thanks for being a part of the Apple Support Communities!
Cheers,
Braden

USB device drawing too much power error message

When I try to plug my iPod into my computer to charge or update my music, I get an error message that says, " Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled." I've tried this while my computer was plugged in and not plugged in and it still gives me the same message. My computer is completely new, I've only had it about 2 weeks, my iPod is about 3 years old, but the actual iPod works great. It's just the USB cord that is giving me a problem. What is wrong and how can I fix it?

My only option is to click "ok." It has already ejected the USB connection, so I don't really have any other choice. Here is the complete text of the message:
"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled
To prevent damaging your computer, the USB device drawing too much power has been disabled. Other devices may have also been disabled. When you disconnect the device drawing too much power, your other USB devices will be enabled again."

My USB is dead after msg "USB drive draw too much power"...

I connected a digital desktop photo thing to my macbook through USB intending to transfer pics to that device; however, my macbook popped out a msg something like, "USB drive draw too much power..." then the Macbook shut down suddenly by it self. After I restart Macbook, my USB is completed dead... how can I revive it?
I tried plugging in wireless mouse or ipod ... USB has no reaction. Thank you for your help or input in advance!!
Shally

Same thing just happened to my Mini, my wife successfully used a SanDisk Micromate adapter to download photos, but when she tried to plug in her iPhone4 the dreaded USB drawing too much power ports will be shutdown msg appeared. I can plug in the phone on my other Mac no problem, so its the Mini's usb ports. Help anyone? SMC reset did not work.

FOR GURUS: Over Current Notice - USB device drawing too much power

Hi,
When I plug a USB extender cable to any USB port on any Mac tested so far, I get the warning:
"USB Over Current Notice. The USB device is currently drawing too much power. The port it is attached to will be deactivated".
In fact, that freezes the Mac mouse and keyboard until the USB extender cable is unplugged, and renders the used USB port unusable until the next restart.
What is going on? Such extender cable worked fine until Virtual PC was open with Windows XP XP2 in safe mode on an iMac G5 (20-inch) with Mac OS X 10.4.3. A 1GB flash pen was inserted, and its files were seen via "My computer". Then the flash pen was taken out (without properly ejecting it via Windows) and someone inserted a 2.2 GB USB hard disk, which froze the Mac and caused the reported problem from that moment.
So it seems that the USB cable is now somehow defective, but I wonder if it could be fixed, since it does not seem to have any internal circuit but just the USB connectors and cables. So I wonder what is going on...
Thanks.

¡Hola, Gabriel!
USB Overcurrent Protection issues arise when one or more of the USB devices draw too much power or, by adding a device to a USB hub, one exceeds the current budget for the entire chain. A detailed explanation can be found in this article, where it states:"Should the cumulative current drawn by a group of downstream ports exceed a preset value, the overcurrent protector removes power from all downstream ports. Overcurrent circuits are used to protect against catastrophic device failures, software errors that lead to devices turning on when the current budget has been exceeded, and user-caused events such as the shorting out of connector pins."See also "USB: Hub Description" for important information on self-powered vs. bus-powered UBS hubs.
Your Apple Pro keyboard is a bus-powered USB hub. Some displays continaing USB ports may act as either bus-powered or self-powered hubs: one has to consult the display's documentation for details.
• If USB Overcurrent problems arise using a bus-powered, third-party USB hub, try a self-powered hub or connect the USB device directly to one of the built-in USB ports on the computer itself.
• If USB Overcurrent Protection issues arise when a device is connected directly to one of the built-in USB ports on the computer itself, then the peripheral device or its cable is either damaged or defective.
Note that you can not put two bus-powered hubs in series. In addition to the article "USB: Hub Description", see also "Apple Pro Keyboard: Devices Connected to Hub May Not Work."
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X

Error message: "USB device drawing too much power"; Battery will no longer hold a charge. Help?

A few months back a jump drive broke while inserted in my Macbook (the computer fell sideways and cracked the jump drive). That particular USB port no longer works and I keep receiving an error message that tells me a USB device is drawing too much power, even though nothing is plugged into either port.
It wasn't a huge issue until my battery stopped holding a charge. The computer is usable while plugged in, but as soon as the cord is disconnected it will immediately shut down. I assume this has something to do with the faulty USB port.
In addition, my CD drive will no longer burn CDs. It will read CDs and allow me to open content from them, but it will no longer burn content to a new disc.
As soon as I am able I am taking the computer to the store to get checked out, but in the meantime I wanted to see if someone has experienced a similar problem and knows what needs to be replaced or repaired, and how much that might be.

I guess I should say, abnormally warm. Does it feel like there's a small heater going in there?
I don't think this is the kind of thing you want to undertake, not if you're asking about how to do it. I don't know much about the insides of Macbooks other than the parts needing replacing are probably soldered to the rest of the computer. It's really something you need an expert to investigate.

Strange problem: USB devices drawing too much power / not responding - multiple macs

Hi everyone
I was wondering if anyone had any solutions to a rather strange problem.
Yesterday my Lacie USB drive and my USB SD card both stopped working on my Macbook Air.
The USB SD card fails to mount (no power light), my Lacie USB drive brings up a warning that it is "Drawing too much power and will be disconnected".
The only thing I had done the day before was try and plug in a USB externally powered host to connect these two devices (and a printer).
This morning I tried these two devices (Lacie drive and SD card) on a different Mac and both still don't work - I get exactly the same issues as described above.
Is it a coincidence they have both gone wrong at the same time? Could it have been the external hub that broke these? Has anyone else come across anything like this?
I've done some searching and have run the SMC and Pram resets on these machines and it doesn't make any difference. I've also tried a different cable / used the cable on a different USB drive and it works fine.
Any help / advice would be awesome!
Thanks in advance
Martin

Are you talking about the CABLE ,the charger is the device that plugs into the wall socket
if it is the cable it has warranty with the iphone .Cable is intelligent ,they go wrong which is why you have a warranty
If it is faulty Apple will exchange it but you will have to take it to an Apple store genius bar ,nothing else you can do

MBP disconnects IPhone everytime saying the USB is drawing too much power?

Hi Guys,
Today I went and bought myself a new Mac Book Pro 13".
Tonight I've been transfering all my files over from my old MacBook and everytime I try to connect my IPhone 3GS by USB to my Mac a message comes up straight away saying "A device conected to your computer is drawing too much power, apple has disconected this device to prevent damage occuring to your computer"
I have tried to connect my phone numerous times while it has been conected to the power cord and also running on battery.
It also took my new Mac a good half an hour to recognise my external hard drive was connected and let me use it..
I have had this problem once or twice with the same IPhone and my old mac so im thinking it may be a problem with my phone considering it is 2 years old now?
But then again, my old mac that is nearly 4 can still connect to my phone when my new MBP can't.
Any help would be appreciated.
Thanks,

Use a self powered USB hub.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

How to fix: "One or more of your USB device drawing too much power..."

Plugged my iPhone to do my usual download of photos off my phone into my iPhoto library so that I can edit them and post on eBay and Etsy. Suddenly, I'm getting the error message:
"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
I'm surmising that it's because my USB cord (connected from my iPhone to MacBook Pro) might be damaged. It's not charging correctly. Keeps going on and off when plugged into wall or computer.
So, will buying a new cord this solve the issue? I have to get one anyway so I guess I'll find out!
Meanwhile, for tonight I'll have to do just email the photos to myself. Ugh.

It should fix it. I would unplug all of your other USB devices from the computer and see if it continues with that error. If so, then certainly replace that cord (do it anyway since its having issues even in the wall)

Apple USB keyboard drawing too much power

I had my apple slim keyboard for more than a year and it always worked perfectly.
Last week I started receiving this error message at the login screen:
"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
Changing the USB port used to solve the problem. Since this Sunday I can't get the keyboard to work on any USB port.
No other devices are using the keyboard as an HUB and the iMac has all the latest updates installed.
I tried on a Macbook and got the same result, while if connected to an HP laptop it works.
I already tried:
- changing USB ports on the rear of the iMac
- attaching it on an externally powered USB HUB
- resetting PRAM
- resetting SMC
- cleaning the contacts of the USB cable and the ports on the keyboardù
- attaching usb devices to the ports on the keyboard will give them power, but those are not recognized by the system
Any clues? I ran out of ideas...
thanks

It's related to the current drawn through the USB port itself which us monitored by the SMC and interpreted by the OS. Without getting too technical, Macs are better "tuned" to detect these issues. It sounds like your keyboard is dead or dying as it is drawing more than it's allocated current threshold. Solution, replace the keyboard. Some possible causes over time include, sweaty hands, humidity, coffee - it's the sugar over time that does the damage.

USB device drawing too much power...

I have a Mac Pro 1,1 that until this last software update (10.6.7) was running fine. After the download and reboot, my computer is now riddled with the same error message: "Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
To give further understanding of my set up, I am running an ATI Radeon 5770 video card with three monitors attached: on the DVI port is a 32" Samsung flat panel TV, and attached to the two mini DVI ports were two 20" Apple Cinema Displays connected via dual link DVI connectors (each of which was connected to two of the three USB ports on the hub in the back of the Mac Pro tower).
So, after the software updated and the computer rebooted, the Apple Cinema Displays did not come back on (obvisously because the USB hub in the back of the tower was shut down).
I have tried repairing permissions. I have reset the PRAM and I have reset the SMC. None of these have thus far worked.
After a visit to Apple, the Genius told me that it was because there was some discrepancy with the other third pary PCIe cards that have in slots one, two and three. So I confirmed with him that if I pull the cards and reboot, the error message should go away. I pulled all third party cards from the slots and I'm still experiencing the same problem.
I realize that this sounds like a logic board replacement. But I'm hoping there's someone else out there in the community who may have had a similar problem and may be able to offer any other kinds of work around.
Just for the record, I am running an RME HDSPe card in slot 1, UAD 1 in slot 2 and UAD 2 in slot three. Slots four and five are occupied by the ATI Radeon 5770.
Any advice would be appreciated.
Thank you.

If you don't have any USB devices plugged in, then your Mac may just be confused. Try an SMC Reset:
HT3964- Intel-based Macs: Resetting the System Management Controller (SMC)

USB Microphone drawing too much power

When I plugged my Blue Microphones Snowball Mic into my Macbook today, I received the following error message:
USB Over Current Notice
A USB device is currently drawing too much power. The hub to which it is attached to will be deactivated.
The Mac is plugged in. There is no other USB device attached. The last time I used it (a few weeks ago), it worked fine. I have plugged it into both USB ports and received the same error message. The mic does not have a power source except the USB cable.
Any potential resolutions?

See this, USB and FireWire Quick Assist, for help.
Mort

Cannot charge iPhone 5 because USB is "using too much power"

Last night I tried charging my iPhone 5 on my MacBook Pro and everything went fine. However, when I tried to do the same thing today, every time I would plug my device in I would get an error message saying that the USB device is using too much power and has been disabled. Is there anyway to override this so that I can charge my phone?

It'll still carry the Apple warranty. My suggestion would be to bring your Macbook along and show them, even if you go to Verizon. You're better off at the Apple store anyway. If it turns out the cable isn't the problem, the diagnosis is free at the Genius Bar and one way or the other your problem should be fixed. Just make an appointment first.

IPhone not charging, "USB port draws too much power"

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