I have a 4gig sansa fuze+ and an 8gig micro sd card.
At first I was able to insert my sd card into the fuze player and then connect the fuze to my computer adn the computer read both the card and player at the same time.
Now, I connect the fuze into my computer with the sd card inserted and the sd card isn’t recognized with it.
I don’t know if it matters but when I conncet to my fuze to the computer it turns off and I have to turn it back on again before it starts connecting. I don’t know if it did that before I wasn’t paying attention.