Hi, I got my iPad in Hong Kong, but I live in North America. The charger that came in the box had 2 parts. One that the USB cable goes into, and the other that plugs into Hong Kong sockets. Since I'm back in NA now, I bought a charger at Apple, and it came with the piece that the USB goes into, the plug for north american sockets, as well as a cable that can be put into the USB piece and plugged into a NA socket. What I'm wondering is, are the pieces the the USB plugs into of the chargers the same for the Hong Kong iPads as the North American iPads? If they are, in essence I now have 2 usable chargers, since I can keep one with the cable plug, and one with the wall plug...right? Thanks!