![]() ![]() UHS-I bus mode: Bus mode is a standard that dictates how different generations of SD cards work.Unless your device shoots only 1080p video, it’s worth confirming that a card has a U3 rating, which gives you the option to shoot 4K. ![]() U3 is required for 4K video and designates a minimum write speed of 30 MB/s. ![]()
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