Super Talent Express RAM Cache 64 GB USB 3.0 Flash Drive ST3U64ERS USB 3.0 High-Performance Flash Drive Features 32 MB DRAM Cache Capacity: 64GB Dramatically Improved Sequential and Random Write Performance USB bus powered - no external power is required Fully-backward compatible to USB 2.0 (with some of the fastest USB 2.0 scores) Durable solid-state storage - 10 years data retention Hot Plug & Play Single Storage Partition Turbo Driver works with Windows XP, Vista and 7 (both 32 & 64bit) Slim and Sleek, anodized Aluminum case 2 year warranty