Silicon Power Marvel M50 64GB Read 90MB/s Write 60MB/s USB 3.0 Flash Drive, Champagne Gold (SP064GBUF3M50V1C) Aluminum surface with modernistic wavy design. USB3.0 and backwards compatibility with USB2.0. Work with PCs and Macs, letting you to share files between different platforms. Backed by lifetime warranty that guarantees complete services and technical support.