Have done a search and found answers to some but not all of my questions about my new Micro SD card. I have bought a 16Gb to replace the 4GB which came with my Desire as I want to put more music and some offline maps onto it. I also have a lot of my apps on the 4Gb card. I understand that it would be OK to plug the Desire into my PC and copy the contents across to a new folder. I would then unmount the card and put the new card in and copy the contents back. So far, so good? But what i'm not sure about is whether (and how) I need to format the new card? Also, I would like to test it for speed as I hear that there are quite a few fakes out there. I bought from Play.com so should be OK but would like to be sure. Please can anyone tell me if there is a good program to test the speed please and whether I have the procedure correct? Thanks. Forgot to say that I don't have an adapter.