The SD card reader especially for USB-C computers. The super-fast SD card reading/writing unit with USB-C connection Sandisk Extreme Pro SD UHS-II works with UHS-II cards and is downward compatible with other SD cards. The flexible design does not block other connections and enables comfortable plug-and-play functionality. Form factor: Works with Non-Uhs, UHS-I, and UHS-II SDHC and SDXC CARDS Interface: USB 3.0 Type-C * replaces the SDDR-399