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Product Description:Sandisk Extreme Pro SDXC V30 U3 170Mbps 512GB Memory CardSanDisk Exrteme PRO 512 GB. Capacity: 512 GB, Flash card type: SDXC, Flash memory class: Class 10, Internal memory type: UHS-I, Read speed: 170 MB/s, Write speed: 90 MB/s, UHS Speed Class: Class 3 (U3).What do you think abo..