Access multiple types of flash memory cards on your USB-C or USB-A enabled smartphone / tablet / laptop or desktop computer USB 3.0 Memory Card Reader for SD and microSD Cards including SDHC and SDXC cards Supports USB 3.0 with data transfer speeds up to 5Gbps (USB powered) Thunderbolt 3 USB-C port compatible Backward compatible with USB 2.0 Compact and portable SD card reader / microSD card reader / USB card reader / USB SD card reader / microSD USB adapter / USB micro SD card reader