A:AnswerThis is kind of a pain in the butt. The fly drives (SD drive and eternal hard drive) show up as seperate drives; so you can copy the file(s) from the SD drive to the fly drive or to hard drive on a computer, you have to use a computer to transfer files therefore the SD card does not load the files directly to the fly drive. There are a couple of drives that will do that but they are more expensive. No external power source must be plugged into the USB cinnection.