Compact USB 3.0 card reader for reading and writing SD/SDHC, microSD/SDHC, as well SDXC cards and MicroSDXC. It is connected to the USB 3.0 port and is backwards compatible with USB 2.0 and USB 1.1.USB 3.0 Mini Card Reader Space-saving version to take suitable Card Read/Write device for SD/SDHC/SDXC, Micro-SD/Micro-SDHC/Micro-SDXC Max. data transfer rate: 5 Gbit/s Protection against dust and dirt