the USB device drawing too much power has been disabled.

I had a similar problem with my MacBook Pro Retina 15" & my iMac showing that my iPhone 5 was drawing too much power and the sync was not possible.

I pulled out all my original and non-oem data cables and started testing one after the other and i found out that the issue did not araise when i was using a Genuine Apple Data Cable.

The Genuine Data cables allowed me to Charge & Sync with my Apple computer while the NonOEM allowed me only to charge.

So i marked/coded my original data cables for the sync and the non oem for charging.

I now make sure that the non oem data cables are charging from a USB outlet that gives only only a 1.1amp or 0.5 amp to protect my iPhone battery on the long run.

I understand that Apple must have put in some kind of a chip on the original data cables to make you buy the genuine ones.

I hope this post helps everyone facing similar problems.

JGF 808 wrote:

Our two year old was watching Dora on Netflix when my wife smelled something burning. She ran into the room to find the belkin charger smoking. It's the usb charger for wife's ipod touch 4th gen. The 20" imac had this same message on the monitor.

I read all the posts here, and i am still not sure if this is a bad cord issue or is it possible that the mac is spiking electricity?

I will try to call Apple, but if anyone has any good advice-- phone numbers, real people who are concerned, that would be good. The 2 year old could easily have burned himself or worse today.

Thank you for your help.

<Email Edited By Host>

Use the Apple charger instead of the Belkin, call Belkin to deal with the smoking Belkin charger, their customer support number is 800-223-5546

I do not think that it can happen without any devices drawing power from the machine.

Logically speaking..If that happens it must either be a software problem or a hardware issue.

I once had a refurbished HP Pavillion DV6Z (Z=AMD & T=Intel) machine whose power charging light would switch on without the power cable being connected to it in the middle of night!!.

It was very scary, i called up HP and they changed the motherboard.

Hope that helped...Thanks.

Hi, Frankly some of those accessories out in the market may be compatible with Mac but may not be optimised with a Mac and will land U in lots of trouble.

Apple has the best customer support programs in the industry.

Call the Apple helpline, if ur problem is caused due to a manufacturing defect/malfunction and ur product is under warranty they will repair or replace your item free of cost.

I advice that you buy the legendary Apple Care for all your Apple products.It is so much peace of mind and reassurance for a little more.

Oh really? Are you saying I have been dreaming this usb message for almost a couple of years now every morning when I turn on my imac? I have different operating systems on various hard drives attached by firewire to the imac, no matter which one i startup on, i still get the message, WITHOUT any usb attached. Recently I installed a new hard drive with Lion - first start up I didn't see the message and I thought: hurray! Well, second startup it's back to the usual message on the screen. Luckily I only have to click it away once, it used to be many, many messages. I have gotten used to it, but my concern is: what if I want to sell the machine? Nobody will buy it :<

BM6 wrote:

, WITHOUT any usb attached.

Once again, that condition is impossible regardless of whether anything is plugged into the external USB connectors, read my previous post.

Your iMac has a minimum of an iSight Camera, an IR receiver and an internal memory card reader, all of which are connected, and all of which are USB.

Csound1 wrote:

BM6 wrote:

, WITHOUT any usb attached.

Once again, that condition is impossible regardless of whether anything is plugged into the external USB connectors, read my previous post.

Your comments really aren't helping anyone.

rogerh2 wrote:

Csound1 wrote:

BM6 wrote:

, WITHOUT any usb attached.

Once again, that condition is impossible regardless of whether anything is plugged into the external USB connectors, read my previous post.

Your comments really aren't helping anyone.

At least they are accurate, unlike your sweeping generalization that "nothing is connected"

Good luck with your problems.

It's the first time it happens to me.

I just connected my iPod touch 4G to my 7 yr old MBP and got this message.

This time the only thing different was that I used a white Apple USB cord that I never used before (a bit different from what I always used, I think it came with one of my older daughter's iPods- perhaps a Classic or so).

After some min of syncing got the "astonishing power drawing message", took the cord to my wife's 3 yr old MBP, disconnected the "regular" cord that she was using to charge/sync her iPod touch 4G and... sure enough, same message.

Disconnected the "different" cord, reconnected the "regular"... business as usual...

Connected my IT to my MBP with the "regular" from my wife's... working as always.

Don't know how many others had this problem, just adding my 2 cents...

GM

I've been having this same problem for the last several months on my MBP-13" mid-2010. I get the error message consistently on start-up with nothing plugged in. Seems like a lot of people are reporting this issue on the same computer model. I have reset the SMC and my firmware is up-to-date. I would appreciate some help from Apple even if I am out of warranty. Thanks.

I bought a Macbook Pro on 09/05/2011. The other day my son left a flash drive (2 GB) in one of the USB ports in the night and left the macbook in sleep mode. Next morning, when switched on inserted flash drive in USB Port get this message "" 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.".

I tried SMC reset and PRAM Reset as suggested in this forum. Nothing worked. Apple Hardware test shows no issue.

Went to Apple Store, to get it fixed. They say the Logical Board has to be replaced and said it would cost $400 and then they said it would cost $280. For leaving a flash drive, that does not draw too much power, system disabled both ports and not recognizing any device - printer or flash drive when connected.

Why should we pay for a faulty design of macbook, which is a simple enable USB Ports on a Windows operated Laptop? For leaving flash drive (2GB) in a port and keeping macbook in sleep mode.

Any help would be appreciated.

daneod, it sounds like you have an issue with one of the internal components connected to the usb bus or perhaps your usb bus itself. You can attempt disabling and re-enabling each device and then the entire bus but it sounds like this may be a warranty/component issue.

I encounter 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..." after using a, new to me and my mbp @least, Apple Pro Mouse purchased second hand. The funny thing is that I was using the mouse fine for several minutes when I first encountered the error/warning message however I didn't loose mouse functionality from the external mounse but the trackpad ceased to respond. I unplugged the Pro Mouse and viola the trackpad worked.

To verify I had a bunk mouse I tried inserting it to the usb once again and got the error message almost immediately but this time the trackpad continued to function fine and the Pro Mouse was disabled. After examining the pro mouse for any defects I did notice the cord was a bit wonky and could have been compromised in some unseen way.

ya there isnt a soloution i havnt tried tried reinstalling lion and os x but still get the mgs and nothing will plug in or is plugged in im thinkin the board must be fried i also had and x ternal hard drive plugged in when i plugged in the d link and now thats dead tried it on other comps will have to take it to apple, cracking up i am!

Having exactly the same problem. Nothing plugged into my USB ports, and this message pops up every 10 minutes or so. Getting on my nerves.

This is an MBA purchased in February 2013. I did not pay this much to have this happen all the time.

it was a usb hub i was using but i plugged in the wrong power lead for the hub (clown i no) but i tried every solotion and had to bring it to apple they tested it and said i need a new logic board and maby new keyboard and track pad everything is fine bar usbs and it was freezing now and then the curser but when i reinstalled lion no freezing but still no hubs working so my keyboard and trackpad should be fine hopefully ill no all by friday! all from a wrong lead sick i am!