This product has been designed to deliver fast data transfer speeds to support the next-generation high-speed SDXC (secure digital high capacity) and micro SDXC cards. Never worry about the hassle of file sharing again because you can simply plug this tool directly into the USB port on any desktop or tablet. The combination of the fast speed delivered by USB 3.0 and compatibility with SDXC/micro SDXC makes this small device the perfect companion when you need to manage high definition videos or high-resolution images. This product also features a new, more efficient design with a sliding cap attachment, allowing for easier Usability, and you'll never lose another cap again that is just another reason why this design is ideal for travel, with its all-in-one design so you won't lose parts or pieces when you're out exploring. You will love how this device gives you the new freedom of sharing anytime, any place without the hassles you've been accustomed to. Whether business or pleasure, you will find c307 ideal for managing your files, photos, videos and more technical specifications:- Memory card reader supports SDHC, SDXC, micro SDHC, micro SDXC cards - compliant with universal serial bus specification revision 2.0/3.0 - compliant with USB mass storage class bulk only transport specification rev. 1.0 - compliant with multimedia card system specification version 4.4 - support super-speed(5gpbs), high-speed (480mbps) and full-speed (12mbps) data transfer - support USB2.0/USB3.0 power saving mode - support windows 8 32-bit and 64-bit, 7 32-bit and 64-bit, vista 32-bit and 64-bit with default driver - support windows XP/2000/ME and MAC OS x with default driver - size 68.5mm (l) x 19.0mm (w) x 13.0mm.