OS X :: USB Port Drawing Too Much Power - The Device That Is Plugged Into It Will Be Deactivated
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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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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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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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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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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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.
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iMac, Mac OS X (10.6.8)
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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 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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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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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"Â
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..Â
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. Â
Info:
MacBook Pro
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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.Â
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.Â
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?Â
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. Â
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. Â
Yes I have tried using a different USB slot, and no that doesn't fix it. Â
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, 2009
The Mac Mini has been going through this strange cycle where anytime I plug in an external hard drive or a flash drive it forces me to hold down the power button to turn it off. If I try booting the Mac Mini with the HDD or flash drive plugged in, it refuses to boot
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Jun 27, 2014
My desktop will no longer recognize anything I plug into any of my usb ports! I have rebooted and updated my software but still nothing….
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Feb 1, 2009
My built in speakers work fine all the time, even when I have headphones plugged in. I looked under the output devices in the system settings and the only option is for built in audio output, a.k.a speakers, there is no option for an alternate audio output, a.k.a headphones. When I plug in my headphones nothing happens, sound continues out of the internal speakers like nothing happened.I have Mac OS X version 10.4.11.. iMac7,1.. 2 Ghz Intel Core 2 Duo 1b 667 mgz DDR2 SDRAM
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Sep 8, 2014
So I plug my external hard drive into my IMac via a usb port, the drive turns on but the drive never appears on my desktop. How do I access my external hard drive when it is not recognized automatically?
Info:
iMac, OS X Mountain Lion (10.8.5)
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Jul 16, 2010
I currently have an external hard drive that has 2 FW400 ports that I use for Time Machine. I want to get at least 2 more external hard drives; one for storage of photos/videos and the other for another backup drive that I can rotate offsite with my current one. My internal hard drive is full and all of my USB ports are in use (however I do have a USB hub). I also have a Mini-DV camcorder that requires a FW400 port.
So, I'm trying to figure out what type of external hard drives I want to build/buy. I'm a little confused about daisy chaining firewire devices and hope someone can offer some clarification.
1. Can you daisy chain with a device that has only 1 of each type of FW port; 1 FW400 and 1 FW800? Or, does the device need to have 2 of the same type of port; 2 FW400's or 2 FW800's?..............
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Jun 14, 2012
I have a preamp connected to the audio in/out jack on my macbook pro 13" 2012. when i plug the audio in from my preamp the sound only shows it as a headphone output and does not list it under input. i also have no button "use audio for:"
Info:MacBookPro, Mac OS X (10.7.4), macbook pro 13" 2012
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Dec 15, 2010
I have had several issues with the USB on my brand-new Core i5 macbook pro. It randomly disconnects USB devices. I've had the issue with multiple USB devices - same story with each one. Further, iTunes will only recognize my iPhone if it is in the port nearest the magsafe connector. The other port fails to recognize my iPhone entirely. Anyone else having a USB issue on their base 15" that was released today?
Furthermore, any suggestions of what to do about it? I'm having a hell of a time restoring my iPhone with this issue... And the Apple Store is over an hour away-I planned a special trip to buy this laptop.
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Nov 5, 2010
When I unplugg my pc vid card 5770 i can boot to mac but when i plug it in the power port on motherboard i can only bootcamp to windows is this normal?kind of a hassle everytime i want to play games because i have to shut down then plug in vid card to crossfire
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Apr 5, 2012
I just bought a macbook air, and i am wondering, if i can use my macbook air plugged in to the charger at all times using at home? or i have to charge it , then empty the battery, and charge it again then remove the plug and empty the battery again and again? Cant i just use the macbook air plugged in when i am home? Will that affect the battery life of my MBA?Â
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Mar 16, 2012
I have a late Macbook Pro 13''I using it at home about 10 hours a day. so it's allways plugged in to AC Power while I'm using it, and when I'm not using, I disconect it from Power.I want to know if this damage my battery OR not? Or should I running my Macbook on Battery? and recharge it (and cycle monthly ... )
Info:
MacBook
Pro, Mac OS X (10.7)
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Apr 17, 2012
I just took apart my Power Mac g4 and put it back together again , but i cant remember where the ethernet cable plugged into on the motherboard..
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PowerMac, Mac OS X (10.4.11)
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May 28, 2012
My pc is not charging when plugged to the power source
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Aug 29, 2010
I think the title pretty much explains it all. I'm wondering if there's any harm that would come from leaving the power adapter plugged in all the time, but without the MacBook connected some of the time. I'm a college student, and with the way I have my desk set up, I can't really take the power adapter with me everywhere I go. So yeah, I was wondering if there was any harm that would come from it.
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Apr 1, 2012
The battery says it is at 99% charge but the computer shuts down when I unplug the power cord.
Info:MacBook, Mac OS X (10.6.7)
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May 30, 2012
I have a 13 inch Macbook Pro that sometimes it works fine, but it always suddenly slows down and doesn't fix itself, but the moment I plug it into the electrical power it normalizes itself and works fast without a problem.
Technical specifications:
Intel Core i5
Processor Speed: 2.3 GHz,
1.3 GB free memory.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Dec 30, 2007
I have a total of 10 USB devices connected to my G5 Mac, including hubs, printers and scanners. Most behave fine, but one or two cause minor problems. The worst offender is a Sierra Wireless 875U Aircard, which is a wireless broadband modem I got through AT&T. I use it for my Internet connection.
Every time I power up my Mac or bring it out of sleep, it won't recognize the 875U, even though it's plugged directly into the Mac's front panel USB port. I can't even see it on System Profiler. Having it in a different port or going to a hub port doesn't make any difference.
To make it work, I have to unplug it, wait a few seconds and plug it back in. My Mac then recognizes it and it works fine until I shut down the Mac or put it to sleep again. Granted, this is only a nuisance level problem, but it would be nice if the Mac recognized all the ports all the time. I'm running a duel G5 2.0 GHz under Mac OS 10.4.10. I see the exact same problem in my G4 iBook (1.0 GHz) also running Mac OS 10.4.10.
Information:
Dual G5 / 2GHz
Mac OS X (10.4.10)
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