Sabrent 2-Slot Micro USB OTG and USB 3.0 Flash Memory Card Reader for Windows, Mac, Linux, and Certain Android Systems - Supports SD, SDHC, SDXC, MMC/MicroSD, T-Flash [Black] (CR-UMMB) SuperSpeed USB 3.0 for maximum performance. Backward compatible with USB 2.0 hosts. Powers via USB port, no additional power supply needed. The standard USB 3.0 plug (type A) and micro USB plug (type B) combination, making this card reader compatible with all tablets and Android smartphones that support OTG function. connect to any mobile device that support USB On-The-Go (USB OTG) Easy to take, use and install, no additional software installation required.