USB 2.0 480 Mbps MicroSDHC SD SDXC UHS-I Memory Card Reader Writer Flash Drive Compliant with USB 2.0 specification Fast data transfer - up to 480 Mbps, between your cell phone / smartphone / PDA and computers Plug-n-Play powers via USB port, no additional power supply needed. Operating System Supported: Windows XP, Windows Vista, Windows 7, Windows 8, Mac OS X, Linux Compatible with Sony, SanDisk, Toshiba, Lexar, Transcend, A-data, Kingston, SDHC, SDXC, Ultra, Extreme Cards.