1. Plastic case with metal revolvable case, 2. USB Host Interface: USB1.1/2.0 3. High reading and writing speed: USB1.1 950KB/s and 750KB/s, USB2.0 21MB/s and 17MB/s 4. Operating System: Windows98/SE/ME/2000/XP, Mac 9.X/OSX, Linux 2.4X 5. Data Retention: Over ten years 6. Available capacity of 8M,16M, 32M, 64M, 128M, 256M, 512M, 1G, 2G,4GB 7. Color: Usually black