3-in-1 Portable Card Reader! The Lexar JumpDrive Trio is a single slot multi-card reader with a USB 2.0 interface that lets you move files between your digital camera, smartphone or music player and your computer. It supports Secure Digital, MultiMediaCard and Memory Stick flash cards! The JDT-231 also functions as a portable USB flash drive for plug and play data transfer! Just insert a compatible flash memory card, plug the device to any USB port and start transferring videos, music or data files.