... optional Passed ISO9001,ROHS,CE,FCC Capacities available128MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, 256GBUSB ... external power supply required, USB bus-powered. Plug-and-play supportUSB specificationCompliant with USB 1.1/2.0SupportMulti-partition ... and password access, BIOS booting as USB-ZIP or USB-HDDData serviceMinimum 10 years data retentionLED lightDual LED ...