Coollife 64GB/32GB USB 2.0 Flash Memory Stick Pen Drive Storage Thumb U Disk Size: Approx. 68x22x11mm Fast data transfer rate--Read: 15MB/sec & Write: 6MB/sec. Compatible with USB 1.1/2.0,Compatible with PC, Notebook, MAC Support Windows 7 / 8,Windows Vista,Windows 2000,Mac OS X, Linux. Easy to read and read in high speed ,No need drive/power supply only plug in.