MacBook Pro :: USB Port, Drawing Too Much Power - A USB Devise Is Currently Drawing Too Much Power And The Port Will Be Deactivated
Oct 2, 2006
This is my first post on the forums, although I'm planning on looking around in here once in a while, to see what people are posting.
For starters, I just wanted to tell you about this little problem I've been having with my MacBook 1,83GHz.
Sitting at my desk at work one morning, peacefully drinking my coffee, I suddenly received a rather discomforting error-message from my shiny new (about 1 month old) MacBook;
"A USB devise is currently drawing too much power and the port will be deactivated.".
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Sep 13, 2006
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.
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Jun 17, 2012
an error message comes up when i try to plug in my iphone. it says usb drawing to much power.....?
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May 18, 2012
I keep receiving this message, over and over, sometimes stacked 6 times or so, but the only issue is that I have nothing plugged into my USB at all. I tried restarting, but it didn't work.
Info:
MacBook Pro, Mac OS X (10.7.4)
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May 24, 2012
In the last two weeks, every time I plug my Apple 27" display cables into my macbook (power, display and USB connections), I get the following error message on my screen about USB ports are drawing too much power. I don't have anything plugged into the USB ports on the back of my display.
Info:
MacBook Pro, IMac, Mac Mini, etc., Mac OS X (10.4.8)
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Jun 22, 2012
I keep getting a pop up that says USB is drawing too much power and will be disabled, I do not have any USB plugged into computer
Info:
MacBook
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Apr 14, 2012
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.
Info:
MacBook Pro
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Dec 1, 2014
I have Macbook Pro Early 2011. recently my USB device stops working and I am getting message " The USB device drawing too much power has been disabled"and MacBook Pro getting over heated.
Info:
Mac Pro, OS X Mavericks (10.9)
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May 10, 2012
My iMac says my wacom tablet is drawing too much power and won't allow it to run. This has never happened before. I've owned them both together for about a year.
Info:
iMac, Mac OS X (10.6.8)
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Aug 14, 2010
Just recently, I keep receiving an error, every couple of minutes or so, thats states: "A USB device is currently drawing too much power. The hub to which it is attached to will be deactivated." Now I have seen this same problem posted, but I have No Device hooked up at all. I have a 2 year old macbook pro 2.4 GHz, running 10.5 I've tried rebooting but it continues to occur.
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Feb 17, 2010
Well, I just recently received a used wired apple keyboard, but whenever I try to plug it into any USB port, I get the following error: Even when I unplug every other USB device, I get this error. I'm using a Mac Mini.
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Apr 8, 2012
Getting error message USB device was drawing too much power from your computer, one or more of your USB devices have been disabled.
Info:
iMac
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Jul 6, 2012
I'm using iMac with wireless mouse and keyboard.Once,I've unplugged flash memory directly without eject, USB error message shown on the screen,After that,although I've removed all of usb devices&cables on the connector,But USB error message always pop up periodically.I tried SMC reset, But issue still existed?
Info:
iMac, Mac OS X (10.6.8)
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Mar 13, 2012
Whilst working on my iMac as per normal, I get this little window that pops up declaring that a USB decice is drawing too much power from my computer and as as a result, one or more of my USB devices has been disabled.
This is not an alien dialogue box to me, I have seen it many times. The problem this time is that, when I removed all my devices to see which one was causing the message to pop up, I discovered that it was my keyboard that was misbehaving.
When the message pops up it states that the offending device has been disabled. This cannot be the case however, as I am able to press enter to close it, and if the keyboard truly is the problem then I shouldn't be able to close it with enter because it would have been disabled... right?
Wondering if anyone else has had this problem. My keyboard is the standard wired + number pad one shipped free with new iMacs. It's not a custom one, it's apple stock through and through.
The baffling thing is that this has only just occured. In the year or two since I bought my iMac it's never been a problem.
Yes I have tried using a different USB slot, and no that doesn't fix it.
This box keeps popping up unless I disconnect my keyboard which of course is no way to use the computer, and I don't have a spare keyboard handy.
Info:
iMac, Mac OS X (10.6.7)
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Apr 17, 2012
Mac book pro slipped off bed and broke power plug but also broke power port. Can power port be replaced?
Info:
MacBook Pro
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Feb 16, 2009
I was wondering if the since the MBA's USB port has extra power running through it, if it is able to power a USB drive without a AC adapter.
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Sep 2, 2014
Macbook pro does not power up after plugging in phone into USB Port
Info:
MacBook Pro
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Nov 3, 2009
256GB SSD-option?- 2.3Ghz (or whaterever it is these days) CPU?- 4GB RAM?- SD-card slot?- Power outlet and port hatch on the _same_ side?I think the last one is especially important on a machine that talks style just as much as essence. It is stupid to hook it up to an external monitor and having cables on both sides. Unclean.The SD-card slot is nice, because it is so much faster than a USB-solution (that be cable, or even the cheap Express-cards found on MBP 17").
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Oct 20, 2010
Failed to fix the cables attached to both sides of the Air problem when connecting to a cinema display. Was this really a difficult fix??
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Nov 2, 2008
The USB port of the MacBook Air has very low power and it is not being able to power my LaCie 250GB drive without having the hard drive connected to its independent power source. i am having to plug in not only my computer to external power, but i also have to connect the drive to an independet power source. can someone recommend a drive that works on with the MacBook Air that can work without independent power?
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Jul 4, 2009
When using the mini display port, do you need to power down the machine to plug it in and un plug it? I assume unplugging it on the fly doesn't mess things up oer the long term. Sorry kind f use to doing things on a windows where sometimes you have shut down the machine to do things.
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May 8, 2009
I have just found that the last USB port on my iMac isn't working, it has power as I can charge my iPhone off it, but it has no data as it dosn't see any device plugged in.
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Feb 28, 2012
Where can I find the header port in my g5 ppc dp desktop. Have bought a card reader and it has to be hooked into the "header port"
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Mac OS X (10.6.8)
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Nov 29, 2007
I have a G5 DP 2.0 and have been using it's built in ethernet port connected straight to my BT home hub (adsl/router) for years. Any way I add into the mix a netgear 1000Base layer 2 switch and the G5's ethernet doesn't work, reconnect straight to the router and all is fine. Now tested with new cables and tested on every port on the switch. By the way the port light on the switch don't light up when G5 attached. Now have tried the switch with a g4 and all is fine on every port and supprisingly I've stuck a PCI card in the G5 and that works as well. Just can't work out why the built in won't work through the switch but will direct.
Information:
G5 + PB G4 + G4
Mac OS X (10.4.10)
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Oct 9, 2007
I'm one of the $200 suckers who bought an iPhone. For my $100 "rebate" I bought the new USB AppleKeyboard. I'm typing on it now. But when I first plugged it into the USB port, I got an error message like this: "The USB port is drawing too much power and it will be disabled." This is the same port the computer's original keyboard was plugged into and it worked fine. Now it's dead. The port is one of two USB ports on the back of my (original) Cinema Display. It's still dead. The AppleKeyboard is plugged into the second USB port now, and it works fine. But I thought I'd alert someone at Apple that this happened. Further, I'd like my USB port back but cannot find anywhere in the help files how to re-enable it. Unless it's fried, of course. But then again, how could the keyboard fry the port?
Information:
Power Mac G5
Mac OS X (10.4.10)
Original 21" Cinema Display, AppleKeyboard
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Dec 26, 2007
The firewire port on the front of my machine is bad. I can't transfer any kind of data using it. The port on the back as well as all USB ports work fine. Would this need a complete motherboard replacement? Would it even be worth doing? Could I build a dual processing machine or buy one cheaper?
Information:
G5
Mac OS X (10.4.4)
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Dec 6, 2007
Does anyone have for a good usb 2.0 card I can install on a power mac G5? I am looking for an internal card not a usb hub.
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Power Mac G5
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Nov 11, 2007
I recently purchased a PCI card made by SIIG: CyberSerial PCI 16550 RS232 Serial I/O Card. After I got it I noticed the system requirements only list Windows.For the **** of it I installed it in my Power Mac. The system seems to recognize it in "About This Mac..." as a "Serial Controller". There appear to be serial ports assigned to it: /dev/cu.pci-serial3a.When I try to run a serial terminal program over this port (connected to some known working hardware) I get gibberish. I've checked out the cable and remote hardware on another machine and it works fine.
Information:
Power Mac G5 1.6GHz
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May 9, 2012
Why can't I hear my music keyboard when it is connected thru the Analog Audio line-in port? Looking at the System Pref. - Sound menu - in-put - Line in Built-in Audio, I can see activity on the input levels when I press the Kawai piano keyboard but no sound is heard. All other sound systems- I-tunes etc are operating properly.
Info:
power mac G5, Mac OS X (10.5.8)
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May 4, 2009
I'm considering to get an additional battery for my MBP (Alu Unibody)
Wondering is there a cable/connector for connecting the battery directly to the MagSafe power port?
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