Magsafe too close to usb port

my magsafe keeps sucking my usb key drives or adapters for SD cards. when i try to plug into the left port naturally, somtimes accidentally the usb port gets sucked by the magsafe port and the usb plug attaches to the magsafe port.
not sure what the safety on that end is, but is it possible that now one of my SD cards don't work based on this accidental powerport magsafe connected briefly to my SD card adapter?
i think either way, the ports are too close. sometimes the magsafe wants to connect to the usb port...i'm afraid one day it might just spark...thoughts?

hi,
i have the 15" macbook pro 2ghz.
the problem is when i got to insert a usb drive or usb memory card adapter on the left hand side of the macbook pro, the usb tends to want to stick to the magnetic portion of the magsafe connector port, and hence gets "sucked" into the port.
it's happened a couple time and i'm wondering on this last occasion that my memory card is not destroyed due to it's contact with the magsafe port.

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Programatically close a USB port

Is there any way to programatically close a USB port?
Sometimes when accessing my USB device if an error is encountered the port will not close properly and then will not allow the device to be accessed the next time without unplugging or reseting the computer first. I have seen something about a RAW USB name being used to control the USB ports through the VISA functions but I didnt know if this was the correct way to handle this situation and also didnt know how to obtain the RAW port name. Essentially I want to deactivate/reactivate a port before I run my program to be sure the port is not busy.
Thanks for any help you can provide.
-Dave

Matthias Eisner wrote:
> Dan Mondrik wrote:
>
>> Dave:
>>
>> It sounds more like you're talking about a reset of some sort. VISA
>> doesn't provide this.
>>
>> Also, VISA Close is no magical silver bullet here - it merely releases
>> something that VISA Open already accessed. So if you're using VISA
>> for USB with a RAW resource, then you should release it with VISA
>> Close when you're done. But if you're not using VISA in the first
>> place, you can't use VISA to close what it didn't open.
>>
>> Dan Mondrik
>> National Instruments
>
>
> Hello,
>
> for me there si also the problem that I want to reste my USB-Bus. I am
> using two webcams and two USB2Serial (Keyspan) on the bus, where the two
> Converters and one webcam are addressed fr
om within labview. From time
> to time one of the cameras seems to hang and this hangs the whole Bus
> and afterwards the application then, so a USB-Reset would help a lot if
> the commands timeout. Actually reconnecting the Devices does the job as
> well, but I don't want to sit in front of my equitpent all night to see
> if it hangs :-)
>
> Is there any possibility to fix this?
I assume this is only possible by going directly into the Windows kernal
and do some stuff, probably not really politically correct, in there.
Definitely not something VISA or such should be concerned about if one
of the underlying device drivers messes up.
What I assume happens is that the webcam driver and the keyspan driver
at some point compete for the USB bus and hang each other in waiting for
one or the other semaphore. It is definitely a bug in either the webcam
or keyspan driver but how to proof to the manufacturer will be a
difficult exercise. Just try to see if they have newer drivers.
At least
you can hope they found the problem already in the meantime.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Abort Execution leaves USB port open

My VI opens a USB port and then processes the data in a while loop for as long as I let it run. When I manually exit the while loop the VI closes the USB port and then stops execution. Using the start control starts the loop again and the VI runs. However if I use the abort execution button on the toolbar the VI stops without closing the USB port and the VI will not run again unless I close and reopen it. How do I avoid this problem?
Solved!
Go to Solution.

So I suggest always stop the program from the front panel button.
You can hide the toolbar so that the the abort button can not be clicked.
Best Regards
Hu Yu

USB port to close each other?

Hi
I have a Macbook with 2 USB ports, but i can only use one at a time, they are to close so if i put my mouse in one i cant get my mp3 player in at the same time.

Yes, they are close, and some devices are too wide to plug in side-by-side. An easy solution is to buy a cheap USB hub.

I plugged in my ipod and now i get 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 have a MAcBook pro and now my USB ports do not work - can anyone help me ???

i plugged in my ipod and now i get 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 have a MAcBook pro and now my USB ports do not work - can anyone help me ???

Sometimes you have to reset the SMC two or three times for it to work, don't know why. I've seen that error message before and 100% of the time it was fixed with an SMC reset. I suppose it's possible that your keyboard or mouse IS drawing too much power, do you have access to another you could try?

HT1338 Does anyone have a fix for 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" - this is a brand new machine with nothing connected to the USB ports - i've done u

Hi
does anyone know how to fix the message on my iMac:
"Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled."
This is a brand new machine and did not have anything attached to the USB ports"
Thanks for any help

If you are getting that message on a brand new Mac with nothing connected to the USB ports, take it back. It is broken.

Ipod too slow when reading video files via DVD player with USB port.

Hi all, this is my first message in this forum.
I've got a DVD player that has a USB port and reads all types of disks. When I use my IPOD 80 GB the files I read are somehow frozen and don't run properly (lack of sync between audio and video, etc). I've got version 1.2.1 and use it in disk mode otherwise the player doesn’t see it. Meanwhile a friend of mine uses it's 60 Gb IPO on the same player, version 1.0 and it doesn't need to go to disk mode, and the player reads perfect from it. Is this a problem of the ipod software version?
Both ipods are in Fat32 format, but in his ipod the partition is set to active. I can't change mine to that, because windows is seeing my IPOD as a removable device, and my friend’s IPOD as a disk.
Hope I haven't been too confusing, and I welcome any help anyone can give.
Thanks.

Sorry, but I don't even know
what it is you are trying to do. Are you attaching
the iPod to a stand alone DVD player? Are you trying
to export stuff out of the iPod into the DVD player?
Patrick
Hi, I'm attaching the iPod to a stand alone DVD player, that has a usb input port. And then read video files from it.

Usb port 1.1 too low

our usb ports are 1.1. too low for ipod shuffle which needs 2.0 if we buy a dock or flexible dock, will both work for converting or will we still be in trouble? operating w/ OS x10.2.8

I'm confused, since Apple claims the shuffle will work on a USB 1.1 port using 10.2.8. (Transfers will obviously be slower.)
If your problem is that the ports accessible to you are low power, for which Apple's recommendation is a different operating system, I'd try a powered hub. The shuffle dock I'm familiar with is really an extension cable with a fancy end on it; to use it you'd want to make sure its male connector was plugged into a port which was providing enough power.
Good luck
srb

I have used all the usb ports on the back of my iMac desktop [2009] - in one I have a hub - too many?

The longer I have had my 2009 desktop iMac, the more I am needing usb ports. I only have 3 on the back. Currently 2 are used for the 2 printers I own and the other has a 3 branch hub in it for my mouse, keyboard and card reader. I have the mouse and keyboard attached this way as the cords work better for me in my workspace. I am using one of the ports on my keyboard for my mp3 player. Now I am branching out into the computer world and have tried using a flash drive. However when I tried plugging it into the other usb port on my keyboard, I get the message that there isn't enough power to support it. Same message when I tried one of the three ports in my hub. So the only way I could get my flashdrive to work was to unplug a printer, plug in the flash drive till I was done with it and then plug in the printer again. Since I am sure that this plugging and unplugging constantly would not be a good thing, I am now contemplating getting a better hub so I could permanently have a usb hub open for my flash drive. I figure I can always use a port on my keyboard for my card reader as I don't use that very often. My question is: "If I do get a better hub to put on my 3rd port on the back of the computer, will that be too much for the poor thing?"

Generally, you should use hubs (of which the keyboard is one) for devices which don't need to get their power from the USB port ("bus-powered"). Portable drives (including flash drives) are bus-powered; printers and other larger devices which have separate power cables are not. So the printers should attach to your hub, and small devices should connect directly to the Mac.
Now, some hubs are actually powered themselves, and these are better suited for powering small devices.
There are some good options here:
http://eshop.macsales.com/search/usb+hub
Are both your printers USB-only, or can they be networked (either wired or wirelessly)? That would save you some ports.
Matt

IPod Nano Drawing Too Much Power From USB Port

My daughter plugged her iPod into the USB port of our iMac today, something she has been doing for months and months, and yet this time she was greeted with an error message telling her that something was drawing too much power from the USB port, so my iMac was shutting down that port. I moved the iPod to another port -- same error message. I moved the iPod to another iMac -- same message. So I am confident that the culprit is the device and not the computer. Any ideas on how to resolve this issue? The iPod is an iPod Nano 7th Generation (current model).

My issue has been solved. The USB cable was bad. I am unsure how to remove my question from the forum ... sorry for taking up anyone's time.

IPod Touch drawing too much power--disabling USB ports

Hi there,
I have a brand new Macbook, just picked it up less than a week ago. I've been hooking up my 2nd gen iPod touch to it for a while without any problems, but suddenly I started to get an error message every time I plug it into my USB port:
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I've been looking all over the internet for a solution to this and I can't find a thing--it's really frustrating since this laptop's brand new and I have no other way of charging my iPod.
My laptop is plugged in while I'm doing this. The error message is instant--it seems to pop up before I've even inserted the USB cable all the way. Also, for what it's worth, I just did a test and I get the error message just by plugging the USB in, even if it's completely unattached to anything.
Thanks, looking forward to a solution.
Message was edited by: stenzelwa
Message was edited by: stenzelwa

Had the same where as soon as i Plug my iPhone into the USB Port on my 2009 "Macbook Pro"
"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 also have been disabled. When you disconnect the device drawing too much power, your other USB devices will be enabled again."
(This is a Simple Fix)
Just Change the USB Cable.
I Just Happened to have a New USB/iPod/iPhone Cable Laying Around, so i Connected it and "Voila" everything was back to Normal.

MacBook error "USB Port has drawn too much power"

Hi,
I recently found a external hard drive and accidentally forgot to switch the volt down on my power brick, and ended up with 24 volts charging up to my white macbook 2008. It immediately shut down and i could smell some smoke coming from the usb port where i plugged in my ext. HD. I pulled it out immediately and it saw no physical damage to the port. When i turned it on, i got 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 restarted my laptop again hoping it would go away but it kept popping up every time. I plugged in a mouse and it didn't turn on, so i plugged it in to the other usb port and it blinked for a moment and turned off, which i presumed it was being disabled. I did SMC my laptop but that didn't work and i could faintly distinct the smell from my usb port still. Did my USB port get burnt? How to i re-enable my USB port?

No, my apple charger came with my Macbook, the switchable power brick was for the hard drive.

USB port driving too much power.....error

hi there i m proud owner of this computer:
Model Name: MacBook Pro
Model Identifier: MacBookPro1,2
Processor Name: Intel Core Duo
Processor Speed: 2,16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
Bus Speed: 667 MHz
Boot ROM Version: MBP12.0061.B03
SMC Version (system): 1.5f10
Serial Number (system): W863607ETJ1
Hardware UUID: 00000000-0000-1000-8000-0016CB98D696
Sudden Motion Sensor:
State: Enabled
I ve upgraded my MBP to SL and since 3/4 days ago i ve been experiencing problems whit the USB port. A nice "error window" pop up saying that one or few USB port is driving too energy and therefor will be shut down. The error continued to pop again many times, sometimes 5 of this windows pops up simultaneously. Yesterday i took a decision (a big step) and reset my mac (after trying other solutions and check ups such as reset the parameter random access memory (PRAM) and nonvolatile RAM (NVRAM) and hardware check ups). Been there done that. I ve decided to install first tiger and no error was shown, then i ve upgraded to leopard and again no error was shown... At last when i ve finally installed SL and reboot the system the first thing that showed up was was that nice error...At least this time it shouws up only at start up... I must conclude that there is a kind of bug in the SL system is there anyone that has an alternative solution to this annoying problem, apart from changing mac ....=D....?

Marco,
Just to let you know you are not alone. I have a similar problem with my MacBook but the message does not seem to affect operation. It occurs when I plug in my USB speakers, but the speakers work just fine and the message does not reappear unless I unplug them and plug them in again. I chatted with a specialist at an Apple store and it was suggested that I make an appointment with a "genius". Because it does not appear to affect operation, I am inclined to wait and see if 10.6.2 changes this behavior.
bd

A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port. WHen we plugged it into the port on the keyboard, the device works. Why?

A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port. When we plugged it into the port on the keyboard, the device works. Why? Obviously the device is operational. Could the USB port have burned out from having too much power drawn? If so, is it reparable?

It can't draw "too much" power, it can only draw as much as the USB port is able to provide and no more. IIRC, the keyboard port has a lower power output than the iMac's port.
That being said, yea, it's possible that the port has failed and it can be replaced or if another port works you can use that one. Although if it is still under warranty or covered by Apple Care, then I would take it to an Apple Store or service provider to get the port repaired.

Usb port rejects midi Keyboard saying too much power being used?

Hello,
any one had an issue with their USB plug in device saying that it was drawing too much power so have disabled the device? I bought my son a keyboard for Christmas. However just today it's stopped letting him use the keyboard due to the USB connection failure. Any clues?

This is a common problem with USB ports. The only permanent solution is to create your own powered set of USB ports. You do that with a powered USB hub, any powered USB hub will do. You plug the hub into a wall outlet for power, and to the Mac for connectivity. All your USB devices can then be plugged into the hub without drawing any extra power from the Mac. Cameras, printers, scanners, keyboards, what ever are all plugged into the hub. You can have as many ports as you want!
Examples of USB hubs.
http://usb-hub-review.toptenreviews.com/

Magsafe too close to usb port

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