Sandisk ULTRA FAST USB. USB Specification Ultra Fast. Product Line Compatible With SDCZ48-064G, SDCZ48, SDCZ48-XXXG, SDCZ48-032G, SDCZ48-016G, SDCZ48-128G, SDCZ48-256G, SDCZ48-016G-U46, SDCZ48-032G-U46, SDCZ48-064G-U46, SDCZ48-128G-U46, SDCZ48-256G-U46.
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