Specification Capacity: 128MB/256MB No driver required except in Windows98. Supports BIOS booting (USB HDD/USB ZIP) Password protection Rewritable: Over 1 million Times Data retention: Up to 10 years High speed transfer: A) USB1. 1: I) Reading: 1000KBps Ii) Writing (max.): 920KBps B) USB2.0: I) Reading: 8MBps II) Writing: 7MBps Our company supply many kinds of USB flash disk in high quality and good price, welcome the buyer all over the world to stock the product. You can find more information and specification about the product in the website of the company.