MemoryMarket&reg; USB 3.0 Card Reader Super Speed 2-slot 8-in-1 for SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC Card, Support UHS-I UHS-II and UHS-III Cards, 12 Months Warranty USB 3.0 2 Slot Memory Card Reader. Reads MicroSD and SD Memory Cards up to 256GB. USB 3.0 enables data transfer rates of up to 95MB/s for faster sync times, backwards compatible with USB 2.0 / 1.1 Fully powered via your USB port - no additional power supply required. No drivers required for Windows 10 / 8 / 7 / Vista or Mac OS X 10.2 and above. This listing includes: MemoryMarket SD/TF Card Reader, hassle-free 12-month warranty.