Product s 1. Super-fast speed and high capacity The USB 3.0 card reader from supports SD or Micro-SD cards with up to 512G and enables super-fast data transfer at up to 80-100 M or s. So you can transfer HD movies, photos or files in seconds if your host is equipped with USB 3.0. Backwards compatible with USB 2.0, 1.1 and 1.0. 2. Phone and PC supported This USB A and Type C card reader offers you a simple connection between a flash memory card and a USB-A or USB-C 3 capable computer, laptop, smartphone and tablet with OTG function. Simply change your phone to a host for data synchronization. Only one for all your USB A and USB C devices. 3. 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 or USB C connector, 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 or SDHC or SD or Extreme I III SD or Ultra II-SD or MMC or RS-MMC or Micro SD or TF or Micro SDXC or Micro SDHC or UHS-I cards. 4. Compact and travel-friendly Small enough for field work, the card reader or writer has a compact design that makes it easy to take with you wherever you go. Plug and Play: No drive required. No additional power supply required. 5. Universal compatibility The USB 3.0 A connector can be used with all desktops or laptops or PS4 or Xbox One or Smart TV devices with USB A connector. The USB-C port is compatible with USB C or Thunderbolt 3 laptops such as MacBook Pro, MacBook Air, Dell XPS15 13, HP Specter X360, Lenovo Yoga series and OTG-compatible Android smartphones or tablets such as Samsung Galaxy S10 or S9 or S8 or Note 8 or A8 or Tab S4.