I was wondering if any one has used a Kingston Wi-Drive. I have not grabbed the manuel but I seem to remember that there was a way to write to a external drive through the USB on the EOS D bodies. Was thinking that if that is so I could kill 2 birds with one stone. Be writing to the usb drive I would have 2 copies of the pics and be able to view them as the where being taken on my iPad or laptop thus not needing any of the wireless extras for the camera. PLUS I get to expand the storage on my iPad.