Description The Lexar Professional Multi-Card 3-in-1 USB 3. 1 Reader is a convenient way to quickly transfer files between multiple cards and your PC. This multi-card reader leverages USB 3. 1 technology to deliver high-speed file transfers of up to 312MB/s for SD and microSD, plus up to 160MB/s for CompactFlash. This allows you to maximize the speed and bandwidth of USB 3. 1 desktop and laptop computers, and supports CompactFlash (including UDMA 7), SD, SDHC, SDXC memory cards, and SD UHS-I and UHS-II memory cards. This makes the reader an excellent choice for photo and video professionals looking to significantly improve workflow.