I have the memory card in my Surface Pro 2 uses without having used it often. Accordingly, I was surprised when I wanted to write today data on the card and delete the old one. Windows gave me continuously that the card is read-only (as I said, the card is hardly used and was constantly in my Surface Pro in it). Then I have an Unlock the SD adapter attempts after software solutions must until I admit to myself now that the map is just gone so defective. I can now read the data, but not write to it.