Lexar's Single Slot Multi-Card Reader is both a card reader 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.