PNY 4GB Attache USB 2.0 Flash Drive Enhanced for Windows Readyboost P-FD4GBATT2-FS

Attache USB 2.0 Flash Drive was designed with Windows Vista in mind and works in conjunction with SuperFetch intelligent caching to enhance system performance for quicker startup and windows multi-tasking. You can get a boost in system responsiveness without upgrading internal components such as processors or RAM. You can define the amount of storage you want to allocate toward ReadyBoost and how much you want to use for traditional storage, so Attache still makes a great solution to capture, store, and share digital images, music, games and documents. (Amazon)