Patriot Signature 4 GB USB 2.0 Portable Flash Drive PSF4GUSB Hi Speed USB 2.0 Compatible (backwards compatible to USB 1.1) Easy plug and play functionality Driverless in Windows ME/2K/XP/Vista/7, Mac OS 9.x and above, Linux with USB storagesupport Dimensions: 72.3mm Length, 17.1mm Width, &amp; 8.1mm Thickness Portable and lightweight (5.5grams)