10pack USB2.0 Flash Drive 4GB/8GB Memory Stick Storage Metal Key Thumb Pen Drive
(The data read speed: 8M-18M/S（USB2.0）. The data write speed: 3M-7M/S（USB2.0). Compatible with Windows 7/Windows 8, Windows XP, Windows Vista, Mac OS 9.0,Hi-Speed USB 2.0 port required for high speed transfer.