... to demandSizeaccording to demandCapacities256MB,512MB,1GB,2GB,4GB, 8GB, 16GB, 32GB,64GB,128GBUSB InterfaceUSB 1.0,1.1 or 2 ... grade and B grade and Samsung chipset,A Grade:Original Toshiba/Micron chipset.B Grade:non-brand chipset.Both A and ... Certificate CE,ROHS,FCCMemory Capacity256MB,512MB,1GB,2GB,4GB,8GB,16GB,32GB,64GB,128GBOperating Systemcompatible with the operation systems of Windows ...