Features: 1.Capacity: 64MB, 128MB, 256MB, 512MB, 2GB and 4GB. 2.USB Host Interface : USB1.1/2.0. 3.High reading and writing speed, LED indicator,with write-protect function. 4.Plug and Play, No external power supply required. 5.Data Retention :Over ten years. 6.Flash: SamSung,Hynix,Toshiba,,ST,Micron. 7.Operating System:Win XP,Win2000,Windows Me and Mac OS. 8.Style:Any style you need,ODM/OEM available. delivery time:within 3 days Quantity: 30000/day ODM/OEM available