ugreen sd card reader portable usb 3.0 dual slot flash memory card adapter hub for tf sd micro sd sdxc sdhc mmc rs-mmc micro sdxc micro sdhc uhs-i for mac windows linux chrome pc laptop ugreen simultaneously read & write on 2 cards for pc <br> this usb 3.0 card reader easily expands sd and tf slot on your computer for card reading and writing at super speed up to 5gbps. it could read and write on two cards simultaneously to keep you away from the hassle of constant unplugging and re-plugging.<br><br> universal compatibility <br> plug and play on the computer or laptop equipped with standard usb 3.0 port with most modern operating systems, including windows xp/vista/7/8/8.1/10, mac os, linux, chrome os. no driver needed and no worry needed!<br><br> super speed on data transfer <br> support super faster data transfer up to 5gbps through usb 3.0 interface -10x faster than usb 2.0, transfer hd movies or files in just seconds.<br><br> compact design <br> slim and portable design, keychain included allows you attach it to your key ring, bag via a lanyard strap, easy to carry around.<br><br> dimension <br> l66*w20*h11.5(mm).<br><br> kindly note <br> the data transfer speed could be affected by multi-cards simultaneous reading.<br><br> package contents <br> 1 x ugreen usb 3.0 card reader with sd/tf<br><br>