The USB 3.0 card reader easily expands the for SD and TF slots on your computer, it allows you to read and write 2 cards at the same time, and saves you the hassle of constant unplugging and reinserting The USB 3.0 interface supports super high-speed data transfer up to 5Gbps, 10 times faster than USB 2.0, allowing you to transfer HD movies or large files in seconds, less waiting time 6" cable pigtail will relieve stress on your computer's USB ports and won't interfere with the use of adjacent ports Compliant with the USB 3.0 standard, backward compatible with USB 2.0/1.0, it supports speeds up to 5Gbps.? With 2 card slots: for SD and for Micro SD/TF slot, can be used to read and write 2 cards at the same time, economical and portable Slim and stylish design, easy to carry around with you no matter where you go Plug and Play, no need to install drivers on your PC or laptop Specifications: Size: L1.4*W2*H0.5(in) / L36*W50*H13(mm) USB 3.0 Cable Length: 6"/15cm Compatible with:? Windows XP/Vista/7/8/8.1/10, Mac OS, Linux, Chrome OS, etc. Dual Card Slots Compatibility: For SD Slot: for SDXC/SDHC/SD/Extreme I III SD/Ultra II SD/MMC/RS-MMC; such as Ultra Class 10 UHS-I SDHC, Extreme Pro UHS-I SDXC TF Slot: for Micro SD/TF/Micro SDXC/Micro SDHC/UHS-I; such as EVO Plus Class 10 Micro SDXC, Ultra 128GB microSDXC