Ugreen All in 1 USB 3.0 Card Reader USB Memory Card Reader (TF/SD) - Black-15cm simultaneously read write on 2 cards for pc 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. universal compatibility 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! super speed on data transfer 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. compact design with slim and sleek design, great kit for travel. easy to grab and go. 6 inches short cable tail would reduce stress on the usb port on your computer and won't affect the use of adjacent ports. specification -compliant with usb 3.0 standard, support speeds up to 5gbps. backward compatible with older usb 2.0/1.x standard (speed limited by usb bus). -with 2 card slots: sd and micro sd. one reader for two cards, cost-effective and portable. -compatible with windows xp/vista/7/8/8.1/10, mac os, linux, etc. -simply plug play, no driver installation required. -size: l1.4*w2*h0.5(in)/l36*w50*h13(mm). -usb 3.0 cable length: 6"/15cm. card slot compatibility *sd slot: sdxc/sdhc/sd/extreme i iii sd/ultra ii sd/mmc/rs-mmc *micro sd/tf slot: micro sd/tf/micro sdxc/micro sdhc/uhs-i notes *this card reader supports sd/micro sd card up to 256g. *the data transfer speed could be affected by multi-cards simultaneous reading. package contents ugreen usb 3.0 card reader with sd/tf x1;