You'll probably find its the card reader on your laptop thats causing the problem. These cards are SD, your reader probably cant read them without an updated driver. I had this issue on a Lenovo T61, after changing the driver, it could then read them
The order came within a responible amount of time..
And they are good for recieving songs from other phones or downloading songs on your own phone.
But when i put in it an adapter and in my laptop, you cant copy songs onto the memory card, something to do with the settings on the memory card which you cannot change. Which is a dissapintment as its one of the main reasons i bought the memory cards, to get songs and pictures from my laptop.
If anyone does know how to copy songs from the laptop onto the memory card, help!