USB Version 1.1/2.0 interface Capacity from 64MB to 4GB(64MB,128MB,256MB,512MB,1GB,2GB,4GB) High Performance --- Write up to 15MB/Sec and read up to 25MB/Sec Auto-run Function is optional Bootable Function Built-in Password Protection Multiple Operation Systems supported: No driver needed in Windows ME, Windows 2000, Windows XP, Mac 9.x or later, Linux Kernel 2.4 or later. --- Except Windows 98 and Windows 98SE need the enclosed driver 10 years data retention More than 1,000,000 times data encryption