ES Trader&reg; 4GB USB FLASH DRIVE H2TESTW PASS MEMORY STICK PEN DRIVE HIGH SPEED USB Drive (4GB) No Driver needed for any operating system higher than Windows ME Support Password Protection Full Compatible with USB 1.1, USB 2.0 and USB 3.0 Plug into USB ports on any Mac or PC and is compatible with Window ME/2000/XP/Vista and Mac OS 9.X or above More than 10 years data retention