The mini SD card works fine - it still takes pictures on my cell phone that I have no way to transfer to a computer since the adapter broke.  The adapter split in half after a few weeks.  I guess it couldn't handle the incredible stress of being pushed in and out of my computer with my finger tip. Won't be buying this brand again.  PS - didn't work at all with the SD slot on my PS3, which can handled all sorts of photo card and USB devices just fine.  Stear clear.