The Lexar Professional USB (Universal Serial Bus) 3.0 Dual-Slot Reader leverages Super Speed USB (Universal Serial Bus) 3.0 technology to deliver high-speed file transfer from card to computer, with a USB (Universal Serial Bus) interface speed up to 500MB/s (reads up to 5 times faster than USB (Universal Serial Bus) 2.0). This means that you can maximize the speed & bandwidth of USB (Universal Serial Bus) 3.0 desktop & laptop computers, & supports Compact Flash (including UDMA 7), SD, SDHC, SDXC, & SD UHS-I & UHS-II memory cards. This makes the reader an excellent choice for photo & video professionals looking to significantly improve workflow.