Over-current detection and protection per downstream port Supports SDXC / SDHC / SD / MMC / MMC 4.0 / Micro SD Works seamlessly with all USB 1.1 and USB 2.0 devices Supports auto-detecting slot with card inserted Fully backwards compatible with USB 1.1, 2.0 Connect up to 3 devices quickly and easily Supports Hot Swapping of all USB devices Data transfer rates up to 5Gbps Plug & Play