... 3,various shape options 4,fast delivery Plastic Casing USB Flash Memory Stick, Metal Swivel Lid, Logo Printing Available ... 4GB, 8GB, 16GB;Genuine flash memory chipset powered. Full and real memory capacity guaranteed!SpecificationsHot plug and play;High speed USB2 ... compliant, backward compatible with USB1.1;No driver needed for Windows ME/2000/XP/Vista/7, Linux Kernel 2.4, Mac OSX;Data retention ...