@tommac888. it's the wrong card. it might work initially, but it will give you trouble down the road. sandisk ultra, imho, are the worst sandisk card for gopro.. I have not had any problems using samsung evo plus u3 128gb and 64gb cards, 4k 60fps no issues, i also have sandisk extreme pro 64gb v30 cards and the samsung evo plus u3 cards work just as good, no heat or saving problems. i haven't tried the sandisk ultra because the evo plus u3 cards are only slightly more expensive and the sandisk ultra is only a u1 card.. We take a look at the subtle differences between the two cards, want more ?! feel free to ask questions below.
The sandisk extreme microsdhc and sandisk professional ultra 64gb microsdxc gopro hero 3 card is custom formatted for high speed lossless recording! includes standard sd adapter.. Sandisk extreme