USB port use causes shut off

Hi,
My lemony Macbook Pro (4,1) which has had two Hard drives, a logic board and a keyboard replaced in it's slightly 3 plus years (AppleCare just ran out) is at it again. Now any time I use a usb device, after a few moments, the computer shuts off (sometimes it restarts on it's own). This happens with a printer, scanner or even a flash drive. It's a new behaviour as of yesterday. Am I screwed?
FYI, after the second HD failure I got a Macbook Air with SSD because I travel a lot and figured it was too rough a lifestyle for the macbook pro, so now this computer doesn't get moved and is treated lovingly... it just hates me.

Perhaps you can figure out a good course of action after reading this: [MacBook Service: Frequently Asked Questions|http://www.apple.com/support/macbook/service>
Hope this helps -GDF

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My USB ports Using too much power with nothing plugged in.

So i have this macbook pro mid 2009 model. Whenever i boot the computer up, there's this message that comes up. USB ports must be shut off because its using too much power blah blah blah. Theres nothing plugged into them!
Everything works, camera and all that, but the USB ports.
Do i need to download anything to get them to working?
Is it with the logic board?
or idk what to do!
Please help!

Have you tried an SMC reset and PRAM reset?
SMC Reset
Shut down the computer.
Unplug the computer’s power cord and disconnect peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
Reset PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P and R.
You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
If that doesn't help, perhaps re-installing the 10.7.2 update using the combo (unless you already tried this):
OS X Lion Update 10.7.2 Client Combo
repairing disk permissions before and after updating.

When I plug in an USB to the usb port my computer shuts down

I bought my macbook air a couple months ago and when I plug in the usb into the usb port my computer shuts down. I dont know why this happens, but is not always, just sometimes.
Does anyone know why this is happening?

Have you tried plugging the flash drive into a different Mac to see if it works? The Air shouldn't have any problem with it, I use a couple of flash drives in mine, although I don't have a pq1. Did you try both USB ports on the Air? Do you have another flash drive you can test in the Air, or a different USB device, like a hard drive or printer?
The only thing I can think of is either a bad flash drive, or a bad USB port on the Air. Sorry, can't be more help than that.

How to read a data from USB port using JAVA

hi all,
i need to know how to read a data from USB port using java. any API are available for java ?.........please give your valuable ideas !!!!!!!!!
Advance Thanks!!

You can do this. Please use this link
[http://www.google.co.in/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=uHu&q=java+read+data+from+usb+port&btnG=Search&meta=&aq=f&oq=]
What research did you do of your own? Have you done some testing application and tried yourself??

After ejecting a disk plugged into the USB port using Finder, I am now getting "The disk was not properly ejected" message. This didn't used to happen. How can this be corrected?

After ejecting a disk plugged into the USB port using Finder, I am now getting "The disk was not properly ejected" message. This didn't used to happen. How can this be corrected?

When you right (control) click on the disk and click eject "disk name", do you pull it immeadiatly or wait a few seconds for it to unmount? Try waiting and see if you get the same message. If you do, when the disk is connected go to applications/utilities/disk utility, after opening DU, select the volume in question from the left side bar and try a permissions repair, you may also run verify disk and see if it comes up with any errors (they will be in red)

Does anyone know how to comunicate with a USB port using labview 6?

Does anyone know how to comunicate with a USB port using labview 6?

Unfortunately, there is no way to communicate directly with a USB port before LabVIEW 7.0 and VISA 3.0. With the new releases, there are functions called "VISA USB Control In" and "VISA USB Control Out" that give you direct access to a USB port.
You can definitely communicate with DAQ, Serial, or GPIB devices that are connected through a USB port, though. This is done seamlessly through the NI-DAQ, NI-Serial, and NI-488.2 drivers.
Luke S.

My Macbook Air (circa ~2008, used) keeps shutting off without warning.

Hi, guys. I'm back again with the same issue. My aluminum Macbook Air (circa late 2008, used) keeps shutting off without warning. It comes back on as if nothing has happened, and I can even unplug as soon as I press the power button (twice, once to do...something, and the second to turn it back on). I have a brand new battery, so I know it's not that, nor is it an overheating issue. This is becoming very frustrating for me.
Before you recommend: I cannot possibly get to a Genius Bar appointment, because, unfortunately, Apple has no stores in West Virginia.
Thank you all for your help!
Battery Information:
Model Information:
Manufacturer:          LIKK
Device Name:          ASMB015
Pack Lot Code:          0
PCB Lot Code:          0
Firmware Version:          0
Hardware Revision:          0
Cell Revision:          0
Charge Information:
Charge Remaining (mAh):          2046
Fully Charged:          No
Charging:          Yes
Full Charge Capacity (mAh):          3745
Health Information:
Cycle Count:          49
Condition:          Normal
Battery Installed:          Yes
Amperage (mA):          2056
Voltage (mV):          11848

And have you already tried to reinstall the OS and you put in a new battery?
cant be monitor or fan, only possibility is onboard Ram / logic board or the SSD is going bad.
If the logic board / memory is bad,...the cost of which would make repair a bit counterintuitive to replace given the age of the unit.
Does it does this plugged in or only on battery? Does it hold a full charge.

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Hi, how do I get power to the usb ports when the pc is shut down? I need to be able to do this as I have a wireless mouse that uses a charging cradle but I can't charge the mouse when the pc is turned off as no power is sent to the cradle when the pc is turned off.
I'm using a P43 neo motherboard with a e8400 (C0 stepping) cpu and windows 7 home.
Cheers.

Hello @XJF,
I understand that you are not getting any signal from your HP ENVY 700-060 Desktop PC. The issue you are describing appears to be a physical issue. Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html.
I would like to thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

ITouch not recognized on any PC anymore - Defect USB port the cause?

Hey guys,
I'm posting here because I've been to the closest Genius Bar twice and they couldn't even tell me what was my problem. I'm kinda desperate right now...
The same problem occurred on my three iPod Touch first gen so far; for some reason they simply stop being recognized by ANY computers. I try different cables, reset, recovery mode, reinstall iTunes, restart the AMDS, update every hardware drivers of my PC... The only thing I haven't done right now is reformatting my PC, which won't happen.
I went to the Apple's Genius Bar and they couldn't find my problem; it wasn't the pins, the cable nor an application problem (I have latest firmware 2.1 by the way). So they gave me another Touch which was also defect. Yesterday, I return and they gave me a third one which worked correctly at the store and on my job's computer.
However, when I got back home I connect it on my own PC (using the same cable et setup) and for some reason, now the same problem reappeared. Doesn't matter what I try, it is not recognized anywhere anymore. When I connect it to a PC, the recharge window never shows; it continue working normally though.
As I said, I updated every hardware drivers and I'm a little tired of going to the store everyday. Could it be caused by a defect USB port? Anyone ever seen something like this?
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Frank

I been having the same problem as you, except I haven't tried it in a different computer. For a while, iTunes is recognizing my iTouch as a digital canon camera. Now its not recognizing it as anything.
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Now, I'm trying to find the USB update thru Microsoft and I'm having difficult time finding this too. I had this iTouch for only 3 months and cost me almost $400 and I'm not able to use it. I have at least 14GB available in this iTouch and I don't know If I will be able to use all this space, it I dont find the solution to this problem.
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Can Ideapad Lynx k3011 micro USB port use for data communication?

Greetings,
I would like to connect on one end an VAG-Com USB dongle (http://www.ross-tech.com/vag-com/hex-usb+can.html) via a Micro USB adaptor to the tablet and the CAN bus to my car on the other end to turn some car features on and off. Can the Micro USB port on the tablet be used as communication device to achieve this?
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Just check ebay or http://www.parts4repair.com/brands/Sony.html
"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

Problem while using reading USB Port : using JSR80

i want to read the data comming from a usb keyboard.
So i looked for the api's in java and could find jUSB and JSR80.
when i tried using jUSB, i could detect the device connected to the usb port
but for that i had to do many things, whih included editing the registry to make a generic JSUB driver. so this implementation is not acceptable to my current requirement which is a web application..and the java program to detect the usb device come in an applet. so we cannot go to each client machines accessing the page and configure the driver and make regisrty edits.
So i moved to JSR80..which was telling abt a complete implementation in Linux.
but what i want is for windows. JSR80 also have an uncertified windows support. so i tried usig it.
i downloaded the following files
http://javax-usb.cvs.sourceforge.net/javax-usb/javax-usb-libusb/lib/jsr80_windows.jar?view=log
javax.usb.properties
jsr80.jar
jsr80_ri.jar
jsr80_windows.jar
downloaded libusb-win32-filter-bin-0.1.10.1.exe from
http://libusb-win32.sourceforge.net/
and created an eclipse project added the jars using the javabuildpath menu.
copied the location of javax.usb.properties in classpath system variable.
insatlled the exe for libusb.
now i wrote the following code.
it didn't show any compile error so i assumed what i did with the jars are correct.
import java.util.Properties;
import javax.usb.UsbException;
import javax.usb.UsbHostManager;
import javax.usb.UsbHub;
import javax.usb.UsbServices;
public class SampleUSBTest {
      * @param args
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          SampleUSBTest obj=new SampleUSBTest();
     public SampleUSBTest()
          UsbServices services;
          try {
               services = UsbHostManager.getUsbServices();
               UsbHub vroothub = services.getRootUsbHub();
               String s=vroothub.toString();
               System.out.println(s);
          } catch (SecurityException e) {
               e.printStackTrace();
          } catch (UsbException e) {
               e.printStackTrace();
}But when i ran the code it showed the following runtime error.
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
     at com.mcreations.usb.windows.JavaxUsb.<clinit>(JavaxUsb.java:65)
     at com.mcreations.usb.windows.WindowsUsbServices.<init>(WindowsUsbServices.java:46)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at javax.usb.UsbHostManager.createUsbServices(Unknown Source)
     at javax.usb.UsbHostManager.getUsbServices(Unknown Source)
     at SampleUSBTest.<init>(SampleUSBTest.java:23)
     at SampleUSBTest.main(SampleUSBTest.java:16)can anyone please give suggestions on this.
sample code with steps to configure and the links for reference will be really appreciated.
thank u

I am also facing the same problem with the code and getting errors while running my application in Eclipse is this some version problem or any other isues are afftecting my application to run successfully.
I get following errors while running my application inspite of having all the jars and libusb for windows:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
     at com.mcreations.usb.windows.JavaxUsb.<clinit>(JavaxUsb.java:65)
     at com.mcreations.usb.windows.WindowsUsbServices.<init>(WindowsUsbServices.java:46)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
     at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
     at java.lang.Class.newInstance0(Class.java:350)
     at java.lang.Class.newInstance(Class.java:303)
     at javax.usb.UsbHostManager.createUsbServices(Unknown Source)
     at javax.usb.UsbHostManager.getUsbServices(Unknown Source)
     at org.symphony.embedded.ShowTopology.getVirtualRootUsbHub(ShowTopology.java:56)
     at org.symphony.embedded.FindUsbDevice.main(FindUsbDevice.java:29)

The device was drawing too much power and that the USB port will be shut down

New to forum, help,
Cannot add a USB hub, powered or not, keep getting message
The device was drawing too much power and the USB port will shut down.

Hi
Is your machine connected to AC power? If not, connect it, and it should work. You may also try resetting the SMC.
If it still doesn't work when connected to AC, then the hub most likely is drawing too much power (i.e you have too many devices connected to it)
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Hi, i was just wondering is it possible to use the USB port on Airport Express with any other USB devices other than printers? for example sharing an external hard drive over a network? thanks

No you can't use it for an external drive.
AirPort Extreme, AirPort Express: Uses for the USB port
http://docs.info.apple.com/article.html?artnum=107857
iPod shuffle: Using AirPort Express to charge
http://docs.info.apple.com/article.html?artnum=300872
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Keep USB ports powered when PC off

Hi,
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Hi AlmightySi
Welcome to Apple Discussions
A Self-powered USB Hub or Computer Sleep, an iMac can sleep 24-7 for weeks without a problem.
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My specs:
i7 4790k
No Gpu
1 x 4 gb Adata ram
1 x 4 gb kingston ram
Please help thanks!

Quote
1 x 4 gb Adata ram
1 x 4 gb kingston ram
Don't mix RAM. Try with single stick only.
Though 9C is USB error.

USB port use causes shut off

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