Hi guys I ordered this last week... http://www.amazon.co.uk/gp/product/B007JTKM30/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1 It came today, put it in my old desktop PC and had no problems transferring my music over to it. After it had finished, I've put it in the Surface and nothing... nadda... zilch... It clicks in nice and firmly but it's existence doesn't show up anywhere mg: even some kinda error would be nice at this point lol. I'm beginning to wonder if I have a faulty slot on my Surface, unfortunately I don't have another card to try out. It can't be the actual card as it's working perfectly on my desktop PC... so I can't really send it back. Have I just wasted £40? Perhaps I would have to look into getting a replacement Surface. In case it matters my desktop PC is running Windows 7 64 bit with NTFS.