Computer can't see MicroSD card

I bought a Sansa Fuze+ (8GB) a few months ago, along with a 16GB memory card… Back then when I plugged it into my computer the two storages showed up in Explorer (I have Windows 7, by the way), and everything was fine. But now when I plug it in, only Internal Storage shows up!

Incidentally, all the music on the card can still be played without any problems on the player, I just can’t access it on the computer.

I’ve already tried unplugging it and plugging it in again, and I’ve updated the firmware to the newest version. Didn’t help.

Any advice?

Try switching the USB Mode?

Thanks! MSC did the trick.

I am having the exact same problem, but this is the first time I’ve tried to use the micro sdhc 16gb card in my sansa fuze+.  Only the internal drive is showing up when I plug the fuze+ into the computer when the card is in the fuze+.  How do I switch the USB mode? 

Settings > System Settings > USB Mode.