... Capacity: 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB.2. Interface: USB 2.0; 3. Operating Systems: Windows Vista/XP/2000/ME/98 ... 8.6 and above; 4. Transfer Rate: High Speed USB 2.0; 5. Data transfer speed: 15MB/s-21MB/s for read ... external power supply required, USB bus powered. 12. Provide OEM service, logo printing, data preload, autorun, customized programming etc. 13. Certification ...