My dashboard camera just arrived and so was my spy key chain. Doesn't have any problem with the 1gb sd card I'm using. Then I bought two sd cards, I got an 8gb for the spy key chain and the 16gb for the dash cam. But then I'm getting this I/O device error. I thought it was the sd cards so I returned both and got 4gb instead. Still having the I/O device error. All sd cards works thou on my brothers computer. But for me, how come my drive is ok with the 1gb but I get the I/O error with the rest of the sd cards?