The Lexar Professional USB 3.0 Dual-Slot Reader is a professional-level, portable USB reader that leverages SuperSpeed USB 3.0 technology to deliver blazing-fast transfer speeds from card to computer, with a USB interface speed up to 500MB/s (reads up to 5 times faster than USB 2.0). It lets you leverage the performance capabilities of the latest UDMA CompactFlash (CF) (including UDMA 7 CF 6.0) and SD, SDHC, SDXC, and SD UHS-I (SD 3.0) memory cards. The reader is also compatible with standard CF and SD cards and USB 2.0, and includes a five-year limited warranty.