The SanDisk Extreme PRO SD UHS-II USB Type-C Card Reader/Writer SDDR-389 is a high-performance card reader compatible with SD, SDHC, and SDXC memory cards. It is designed for universal use and features a USB-C connectivity. The adapter form factor is SD, and it is compatible with a wide range of models. This card reader is perfect for those who need to transfer large files quickly and efficiently.