32MB version runs flawlessly in Samsung Galaxy Tab 2 7.0. Speed tested on the PC (USB 2.0 external USB 2.0 Card Reader) under CrystalDiskMark: 14.83 MB / s write, read 18.14 MB / s. Had hoped for a little more speed to me, but for use in the tablet it is enough full. The limiting factor appears to be 2.0 readers USB 2.0 or USB chip in. Under USB 3.0, the card can still have slightly more to speed, as the review of Chris S. from August 26, 2013 shows, especially when the reading speed is then neatly longer there under USB 3.0.