IOGEAR Compact USB 3.0 SDXC/MicroSDXC Card Reader/Writer, GFR305SD Supports: SD, miniSD, microSD (128GB max) / T-Flash, MMC, MMC Plus, RS-MMC, MMC Mobile (128GB max) SuperSpeed data transfer - up to 5Gbps Compliant with USB 3.0, 2.0 and 1.1 specification USB powered - no external AC adapter required