MemoryPack Mobile NANO II USB Reader VX microSDXC white TINY Compatible with all MicroSDXC, MicroSDHC microSD cards USB 2.0 3.0 compatible, Ultra Portable, World smallest Reader. Compatible with Vista, Mac OS X and XP Windows 7 8 Dimension: 17.5 x 14 x 6.5mm ( l x w x d ) accepts microSDXC up to 64GB , memory card not included.