Capacity: 128M--64G optional You can customize the capacity you require, we will try our best to meet your requirements. * Plug and play, USB high-speed interface, no power supply, easy to use. High temperature resistance, easy to carry, no matter how bad the external environment to ensure data security. * Metal buckle, light and convenient, WIN98 or higher version does not need to drive * Compatible with PC, notebook, Apple, MAC, server. *Operating system win98/ME/2000/XP, Mac OS 9.X/Linux2.4