1. togero_03's Avatar
    how to disable usb charging...
    07-02-10 06:21 AM
  2. wnm's Avatar
    I don't think you can on the BB. You may be able to disable a USB port on the computer, but it probably would disable the data connection as well. Are you having charging issues with USB?
    07-02-10 06:26 AM
  3. Pete6's Avatar
    When the correct voltage and current is presented to the BlackBerry USB port it will commence charging.

    Unless you physically cut the red VCC+ wire on a USB cable charging will autoamtically happen.

    Pin Name Cable color Description
    1 VCC Red +5 VDC
    2 D- White USB Data -
    3 D+ Green USB Data +
    4
    5 GND Black Ground
    07-02-10 07:09 AM
  4. WolfmanRobby's Avatar
    Using Pete's Illustration, you could also try to cover PIN 1 on the Large (Type A) connector that goes into your PC. Say with a piece of tape??

    That would at least keep you from trashing the USB cable.

    Also, check the BIOS on your PC (the press XXX to enter setup message when you power it on). Some PC's (mainly laptops to conserve battery power) have an option there to disable the power to the USB ports. I've seen it on a couple of Netbooks (Lenovo I think??) and even a laptop or two (Don't remember the brand).
    07-02-10 09:52 AM
  5. Pete6's Avatar
    Well it was not really a suggestion although I suppose it read that way. I was more showing how it could be done with a pair of wire cutters. USB cable are quite cheap and plentiful, after all.

    I am not sure that I'd care to put tape down a USB connector - even on an A connector.

    The thought of all that sticky tape glue adhering to a USB port if/when the tape slipped worries me somewhat. However, it would work. Well, not work if you want to stop charging.

    I have found a way that might work here Windows 7 USB power management won't allow me to un-check the "Allow the computer to turn off device..." box Check the second post.

    I just tried this on my Dell Studio 1745 and could not make it work. Maybe its was a Dell thing.
    07-02-10 10:11 AM
  6. Laura Knotek's Avatar
    This fix will completely disable a USB port.

    Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
    322756 How to back up and restore the registry in Windows
    If a USB storage device is already installed on the computer, set the Start value in the following registry key to 4:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\UsbStor
    When you do this, the USB storage device does not work when the user connects the device to the computer. To set the Start value, follow these steps:
    Click Start, and then click Run.
    In the Open box, type regedit, and then click OK.
    Locate and then click the following registry key:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\UsbStor
    In the details pane, double-click Start.
    In the Value data box, type 4, click Hexadecimal (if it is not already selected), and then click OK.
    Exit Registry Editor.

    How can I prevent users from connecting to a USB storage device?
    07-02-10 10:26 AM
  7. Pete6's Avatar
    I know that you said it but,.... doesn't USBStor kill the entire USB port (data and power)?

    If you do that you may as well unplug the cable - lol.

    lak611, please correct me if I'm wrong here.
    07-02-10 10:36 AM
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