Super-fast speed and high capacity USB 3.0 card reader supports SD/Micro-SD cards up to; 512G and enables ultra-fast data transfer up to 80-100M/s. So you can transfer movies, photos, or HD files in seconds if your host is equipped with an HD device. of USB 3.0. Backward compatible with USB 2.0, 1.1 and 1.0. Phone and PC supported This USB A and Type C card reader gives you a simple connection between a flash memory card and USB-A/USB-C 3 compatible computer, laptop, smartphone and tablet with OTG function. Just change your phone to host for data synchronization. One for all your USB A and USB C devices. One reader for multi-cards The USB 3.0 SD card reader has two card slots: SD, Micro SD slots and USB A 3.0 connector / USB C, with which you can use the most common flash media on a computer, laptop or tablet USB 3.0 interface can read and transmit, including SDXC / SDHC / SD / Extreme I III SD cards / Ultra II-SD / MMC / RS-MMC or Micro SD / TF / Micro SDXC / Micro SDHC / UHS-I. Compact and suitable; TravelSmall enough for field work, the card reader/writer has a compact design that makes it easy to carry; take with you or serious; that you go. Plug and Play: No drive required. No additional power supply required.