Are you using Windows XP, Vista and 7 and it so happened that your Apple iPad 3G or Wifi is not charging when you plugged in the USB cable? Don’t worry, this is not a hardware malfunctioning issue, this is due to the under-powered USB ports on most of the Windows. A simple driver update will do the trick.
Users will still able to charge their iPad using conventional normal PC USB ports when the unit is in sleep mode with screen off. This is probably due to the lack of power supply to power up both the screen and battery at the same time, if you would like to use the iPad while it is charging, you’ll have to update your USB driver.
Download these BIOS USB driver updates now for a faster and speedier charging rate.