If you buy this product only for micro sd go ahead by cons I had a problem with the adapter. Indeed impossible to write on the card with the adapter plugged. Yes I remove the lock from the adapter and frustration I even cut on the unlock position because this function is useless for me. Yet I can not always write it (I also format). As against the phone connected by USB to the computer while walking niquel. Sandisk by a design problem? I already try with an SD lock function on my computer running so well that it's not a problem of my card reader.