DiGiYes Superspeed USB 3.0 Multi-in-1 Memory Card Reader, Read 2 Cards Simultaneously, Supports SD/TF Micro SD/SDHC / SDXC for MacBook Pro Air, iMac, Mac Mini, Microsoft Surface Pro USB 3.0 Super-Speed Transmission Speed: Adopting USB 3.0 interface, this usb card reader could transmit data with possible highest speed up to 5Gbps. Backward compatible with USB2.0/1.1, provides superior transmission performance. Read 2 Cards Simultaneously & LED Indicator: Designed with 2 card slots, support SDHC, SDXC, Micro SD, Micro SDHC (UHS-I), Micro SDXC (UHS-I). Allow to read 2 cards simultaneously. Relieving you from the trouble of plugging in and out, ideal for transferring high-resolution images and video recordings. LED indicates activity status Compatible for Multi-Systems: The 3.0 USB card reader could be compatible with most main-stream system, like: Windows XP / Vista/ 7/ 8(32/64-bit), Mac OS 9.x or higher, in no need of drive, you could use it upon plugging it with your Smart devices. Extensive Compatibility: Work well for your MacBook Air, MacBook Pro, iMac, Google ChromeBook, Microsoft Surface Pro 4 3 2, Lenovo Yoga, ThinkPad, Samsung, Dell ect with USB A port interface. Truly Plug & Play and Portable Design: Plug and play, without complicated installation process. Carrying with a 4inch USB data cable, easy for both laptop and PC users. The card reader with new and portable design could saves space.