1. One card reader for multiple cards with 5 card slots 1 in 5 USBC3 0 memory card reader designed with 5 card slots, allowing you to read and transfer data 2. Compatible with various devices for Surface, ideapad, Macbook, Air Retina, etc. 3. Fast transfer speed up to 5gbps (10 times faster than USB 2.0 interface), upload photos and videos in seconds 4. Unicersal compatibility for Windows 10/8/8. 1/7/Vista/XP and Mac OS X and Chrome OS plug and play Product Description: Model: CR307-A & CR307-C Interface: USB 3.0 Support memory card CF, SD, TF, XD, CFastMMC, MS PRO, MS Duo Installation method: external Operating System Requirements: All systems are supported Style: simple style Interface type: USB 3.0 Type: Multi-function card reader Applicable objects: office workers size: 11.6 x 3.5 x 1CM Material: aluminum alloy colour: grey Package Contents: 2 x USB 5 in 1 multi-function card reader 2 x Chinese and English instructions