1) USB 1.1/2.0 compliant, hot plug & play 2) No external power is required, powered by USB bus directly 3) Compatible between different operating systems 4) Electronic storage device, no mechanical components, shake protection, electromagnetic wave protection 5) Write/delete protection switch 6) PC compatible, Mac compatible with USB port 7) USB1.1 writting speed:800KB/s reading 900KB/s USB2.0 writting speed:11MB/s reading speed 12MB/s 8) optional capacity:16M-1G