?Warm Notice ? 1. Please make sure your USB C smartphone supports OTG function; 2. USB port, SD port and Micro SD port can’t be used at the same time, only one interface at a time; 3. All the smartphones CANNOT recognize NTFS format, only support FAT32 format, please backup the files on your SD card and format the SD card into FAT32 format. Please feel free to contact us if you have any questions. We provide 24 hours after-sale service for our customers. ?Safety, Durability, and Portability ? The shell of this USB SD card reader, were made out of upgraded fireproof material that protects your devices. The shell surface with superior wear and impact resistance. Lightweight and compact size for you to carry around. ?Super Utility Ports? With this micro SD card adapter, you can connect USB peripherals such as USB flash disk, mouse, keyboard, card reader, camera, printer, hard drive and many other USB connected devices. Using this adapter to connect the keyboard to a USB C smartphone, you can enjoy faster typing and chatting. ?Wide Compatibility? Micro sd card reader Compatible with SD, SDHC, SDXC, Micro SD, Micro SDHC, Micro SDXC cards and USB 2.0 device, USB C for New MacBook 2016-2019, iPad Pro. Suitable Compatible with Samsung Galaxy S10 / S9 / S8 / Google Pixel etc. SD card and Micro SD card can be used at a fast transfer speed up to 104 M/s, capacity up to 512GB. ?Plug and Play? This USB C SD card reader no need to download Apps, plug and play. Portable and easily Transfer the photos and videos to your USB C device from SD / TF Card or other USB 2.0 device. High-Speed Transfer with the speed of 14MB~16MB/S. With the card reader, share videos or pictures with others at any time. No need to use PC anymore, Fast and easy.