SanDisk Ultra - USB flash drive - 512 GB - USB 3.0. The SanDisk Ultra USB 3.0 Flash Drive combines faster data speeds and generous capacity in a compact, stylish package. Spend less time waiting and transfer files to the drive up to ten times faster than with a standard USB 2.0 drive. With storage capacities up to 512GB, the drive can accommodate your bulkiest media files and documents.