Indeed, as the title indicates this card worked very well until overnight it is no longer recognized by my Archos 43IT in which it was housed for 7 months well on a lot of files or more less important. I tried to get it up under win, mac, linux, camera ... and nothing to do card is invisible so informatable or unrecoverable. Not being the only one which the problem occurred, I hope an answer to the height from Amazon and Transcend ...