Toshiba 4gb USB 2.0 High Speed Flash Memory Toshiba TransMemoryU2K-004GT(A)4 GB USB 2.0 Flash Drive General Features: 4 GB capacity White casing with green cap Hi-Speed USB 2.0 interface (backwards compatible with USB 1.1) Extremely compact and portable design Lightweight Windows Vista ReadyBoost supported Bus powered Plug-and-Play Easy to use index labels (included) Dimensions: 2.5 x 0.75 x 0.25-inches (L x W x D, approximate)