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The SanDisk Extreme PRO 512GB SDXC UHS-I card is a high-capacity memory card for cameras and camcorders that shoot 4K video and burst stills. It carries the Extreme PRO name, SanDisk's top UHS-I line, with rated read speeds up to 170MB/s and write speeds up to 90MB/s, and it is rated for UHS Speed Class 3 and V30, so it sustains the write speed 4K recording needs. It suits DSLR and mirrorless shooters, drone and action-camera users, and anyone who wants one card for a long day of footage. Against UHS-II cards it is slower on paper, but it works in the far larger pool of cameras that only support UHS-I, and it costs far less per gigabyte than UHS-II media.
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Owners of the Extreme PRO UHS-I line generally report reliable performance in cameras and fast offloads to a computer. Some note the card is limited by the UHS-I interface and does not match UHS-II cards in cameras that support them.
The SanDisk Extreme PRO is a 512GB SDXC UHS-I memory card rated for 4K video. It is a new card, model SDSDXXJ-512G-GN6SN, and it comes in its original box with all originally boxed contents.
