Key Shape USB Flash Drive,Key USB Disk Material:Metal Hynix Flash Memory from 1GB to 8GB USB 2.0 compliant CE,ROHS,FCC Key Shape USB Flash Drive,Key USB Disk Features:1.Storage capacities: 64MB - 8GB (HYNIX chips) 2. USB 1.1/2.0 compliant, hot plug and play 3. 10 years data retention 4. USB 2.0 data transfer rat Read: 17MbpsWrite: 13Mbps 5. Operating systems: Windows 98SE, ME, 2000, XP,Vista, MAC ...