... and optional:*32GB,16GB,8GB,4GB,2GB,1GB,512MB,256MB,128MB*Support USB1.1/USB 2.0 specification;*Portable data storage ... device;*Nand Flash memory chipset building;*Original new brand flash chipset(Samsung ... , Hot removable;*Password protection;*MLC Flash chip:Writting/Reading speed:3-4mBps/8-10mbps;*SLC Flash chip:Writting/Reading speed:6-8mbps/10 ...