Here is a guide to doing this very thing: http://elasticsheep.com/2010/04/teensy2-usb-mass-storage-with-an-sd-card/ http://elasticsheep.com/2010/04/teensy2-usb-

Here is a guide to doing this very thing: http://elasticsheep.com/2010/04/teensy2-usb-mass-storage-with-an-sd-card/ http://elasticsheep.com/2010/04/teensy2-usb-mass-storage-wit... Well, it doesn't tell you how to do the fakery. But it does give you a good starting place for rolling your own mass storage controller. It uses the awesome Teensy dev boards. http://www.pjrc.com/teensy/ http://www.pjrc.com/teensy/