Not sure if I missed it in someones post but I had mine working, then it was not seeing the card, I have the Sandisk 4G card from Best Buy. So what I did was installed the card in that adapter and put it in my PC and formatted the card and has been stable with no issues since. I am assuming since I did not format the card to start with maybee thats why I was having issues not seeing it. Anyhow just a heads up for others that might help with the card not being recognized