Portable storage device in an ultra slim format. Plug-and-play technology. Does not block adjacent USB ports. Supports password protection. No driver needed for most operating systems. LED indicator lights on when in use. Durable and reliable storage data retention for 10+ years. 1000G shock resistance. No external power required. Connector/Port/Interface: USB 1.1; USB 2.0; Storage Capacity: 4 GB; Drive Write Speed: 20 MBps; Reading Speed: 30 MBps.