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 Carry the hub with you while you're traveling, and connect virtually any USB peripheral wherever you go Perfect for home, office, and hot-desk environments Upgrade and expand the connection capabilities of your MacBook, Ultrabook, laptop, or desktop System requirements: Android 6.0 or above,Mac OS 10.9 or above, Windows 7 32-bit / Windows 7 64-bit, Windows 8.1 32-bit / Windows 8.1 64-bit,Windows 10 32-bit / Windows 10 64-bit, Linux Kernel 2.6 or above This USB Hub can be connected to a computer via the USB Type-A interface. It expands the computer by two USB Type-A connectors as well as four slots for SD memory cards. If the hub is connected to a computer with a USB 3.0 interface, a maximum current of 600 mA is divided between the USB ports and the card reader. If necessary, an optional power supply or an optional power cable can be connected to the power socket.