Lexar's Single Slot Multi-Card Reader is both a card reader (and writer) and a portable USB flash drive in one. Flexible enough to be expanded and upgraded simply by inserting a SD, Memory Stick, Memory Stick PRO, MMC and xD-Picture cards and is compatible with USB 2.0 ports. You can keep separate cards for separate uses. Since no drivers are required, it's easy to hook up to any computer with an available USB port.