Kingston Technology 512GB SDXC UHS-I Class 10, 512 GB, SDXC, Class 10, UHS-I, 90 MB/s, 45 MB/s Kingston Technology 512GB SDXC UHS-I Class 10. Capacity: 512 GB, Flash card type: SDXC, Flash memory class: Class 10, Internal memory type: UHS-I, Read speed: 90 MB/s, Write speed: 45 MB/s. Product color: Black