MemoryPack Mobile NANO II USB Reader VX microSDXC black TINY accepts 64GB microSDXC 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.