... drive: Storage Capacities:64MB, 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB,128GB……Transfer Rate:Hi-Speed USB 2.0 Certified, Compatible USB ... Transfer Speed:10MB/s-15MB/s for read. 2.5MB/s-5MB/s for write.Power:No external power requiredData Retention:Minimum 10 YearFunctions ...