I just noticed that the 32GB Sandisk ultra Class 10 cards I got on sale Thursday are actually micros, each with an adapter. I haven't opened yet. I'm shooting with Vixia cameras. Is there any reason to return them and get the non-micro cards, ie., are these slower or problematic for video in any way? The package says full HD video, but on the back says, support for this may vary.

Thanks.

Seems like one more connection you have to worry about...
I'd return them.