Lexar JumpDrive Firefly 4 GB USB 2.0 Flash Drive JDFF4GB-431 Catalog Publishing Type - USB/Jump Drives-Standard Connector/Port/Interface - USB 2.0 Global Product Type - USB/Jump Drives Operating System Compatibility - Mac OS 9, OS X, Windows 98SE, 2000, Me, XP, Vista Post-Consumer Recycled Content Percent - 0 %