Those of you using Class 10 MicroSD.
What speed are you getting when transferring files from PC to X3 in Storage mode?
Im only getting 5mb and im worried I got a fake Samsung Evo card as they are rated at 48mb!
I am using a Phillips class 10 and that seems to do it between 4 and 8mb/s when in the X3. When it is in a proper card reader, it increases to about 11mb/s.
Try your card directly with a high speed micro SD card reader and I am sure it will be faster that the X3 its self. When I put all my music on my 64gb card, it was taking such a long time through the X3 that I gave up. I then put the card in a card reader and it was much faster.
As I mainly put on Mp3s, the X3 doesn't take long to put just a few albums on the card.