What I ran into was I got large card, I think 64 gig, I will have to check.
Formatted in the Phantom, worked fine, but my old xp computers won't bring it up through the Phantom. I tried formatting with xp computer, every way possible. I can format it, but then the Phantom says Format Required to use this SD card. So my wife's laptop will read the card and can download through the phantom.
So anyways, not exactly what I had in mind.
For now, I will stick with 8 gig for flights around the house, then use the large one for taking vids out on the days we drive out and about.