4-IN-1: JSAUX USB C SD Card Reader read memory card while connecting USB additional equipment and charging. Double Card Slot: This JSAUX multi-function card reader is equipped with an SD slot and a TF slot, providing compatibility with a broad range of memory cards such as SD, SDHC, SDXC, Micro SD, Micro SDHC, and Micro SDXC. Note: To ensure the transfer speed, please read only one TF card or SD card when reading the memory card.