The memory card was a bonus to a Sony Alpha SLT-58 and she goes in internal operations with the highly fast to work. The raw storage (14.4 GB effectively usable) is sufficient for household use and certainly over. The UHS-I, however, helps only devices that are also equipped with this interface. When transmitted to the computer or conversion (eg from MTS to MPEG4) there is no advantage. On the contrary, since the access speed breaks pretty much one and the ausgelobten 40 MB / sec transfer rates, all that remains is a fraction - ie just over a quarter - left (Writing even only one tenth). Blame but may well be the card reader or USB port. Whether, however, the on Sony's support site for free bargain offered data recovery software needed / used, each is even asked prey. Us Mac and / or Linux user you eh locked it. The program runs namely only on Windoze. All in all a good, unpretentious class 10 SDHC card for digital camera.