Data transfer rate up to: SuperSpeed USB 5 Gbps, Hi-Speed 480 Mbps, Full-Speed 12 Mbps, Low-Speed 1.5 Mbps The card reader supports following memory cards: SD, SD3.0 UHS-I, SD High Capacity (SDHC), SD Ultra, SDHC Ultra, SDXC, MMC-I, MMC-II, MMC 4.0, MMCmobile, RS-MMC, RS-MMC 4.0 Plug and Play