Top-Longer UHS-II Superspeed USB 3.0 SD 4.0 Multi-in-1 Card Reader USB3.0 Card Reader Easy Plug and Play, no Need External Power Supply, no drever installation required LED Indicator, blue LED flash while reading and writing data process, convenient for you to know the work of the item Supports SD, SDHC and SDXC memory card, mini SD memory cards with an adapter (not included), micro SD(T-Flash) Supports Usb3.0 / Usb2.0 / Usb1.0 Standards & Requests no Driver-Installation Supports UHS-II SD Card, which meets the SD4.0 Technology. (with Ultimate W/R Speed of 210Mbps/250mbps on Toshiba SD4.0 Memory Card tested. Different OS test might be different).