Details :  1) USB 1.1 & 2.0 Certified  2) Capacities: 64MB, 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB.  3) Reading speed: 9.3MB/S; Writing speed: 2MB/S (computer configuration dependant) 4) Plug and Play, No external power supply required, USB bus-powered 5) Operating system: Windows98/NT/ME/2000/XP or higher (driverless above Win98) 6) free of mechanical parts, aseismic, anti-electromagnetic wave  7) 2 Years Warranty  8) at least 10 years of data retention