1. Designed for fast reading and writing?: USB 3.0 card reader, fast reading and data transfer speed is 5 Gbps. Plug amp; Play, it can be connected directly to the USB port of your tablet or computer, no driver needed 2. Supported multimedia card formats?: Can read and write new memory card formats such as SD / Micro SD / MMC / SDHC / SDXC / CF cards and other types of memory cards. 3. Great compatibility?: Suitable for the data transfer of high-resolution pictures and video recordings from memory cards to your computer (supports Windows XP, Windows 7, Windows 8, Windows 8.1, Windows 10 etc.) and also backwards compatible with USB 2.0./1.1. 4. Pocket format with chain?: With a length of only 60mm and an anti-lost chain, the card reader is very convenient to carry and use. At the same time, the reliable built-in chipset ensure safe and stable data transmission and avoid overvoltage and overstorm. 5. Transparent protective cover?: The cover effectively protects the USB connector from splashes and drops, and prevents the connector from being clogged by dust.