Hi all, I have a old iPhone 3GS which I can only charge using a docking station connected to a wall socket at home. When I connect my iPhone using the USB cable to any windows pc it doesn't get detected. Lastly, I have also tried to connect the iPhone using the USB cable to the docking station (which has a USB 2 port) and it charges. Another note, all the computers that I have tested does have USB2 ports (including a 6 month old computer from HP) and their corresponding drivers. Any clues? Any help would be greatly appreciated.