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Usb 2.0 Port Not Allowing Iphone To Connect


I just upgraded my desktop to windows 7. Everything seemed to work just fine at first. After 1 week of letting it settle in i decided to hook up my apple iphone and make sure it worked.initial install seemed to work but connection was very slow (usb port). Windows 7 notice came up that the device could operate faster if plugged into a high speed usb port. Iphone currently connects at the 12mbps rate.

Here's the problem. All my other devices (usb 2. 0) operate at the 480mbps speed using the very same usb port. I have moved usb devices around (to different usb ports) but no change. All 2. 0 devices operate at 480mbps but iphone operates only at 12mbps. Thought for sure the apple iphone driver was to blame but have uninstalled and re-installed several times. But it makes no difference. Still only operates at 12mbps speed.

Motherboard bios is most recent. All drivers appear to be the latest (at least as windows 7 indicates when trying to update). Have no idea of  what is causing this.

However, i have a suspicion but i don't know enough about usb port configurations to know for sure. It appears to me that the device (iphone) is now somehow associated to a universal usb controller instead of the enhanced usb controller and everytime i re-install it associates the driver to the universal usb controller (12mbps). I draw this conclusion because of testing the device on other usb ports and testing other usb 2. 0 high-speed devices on the same ports.

Anyone have any suggestions? I'm about to install a 3rd part usb 2. 0 card to see if this will fix the issue but i already have more usb ports than i need and i would prefer not to have to install the card.


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