So i have Sansa Fuze also and my computer cannot recognize the device I have set the Usb mode to Msc and the mp4 is only being charged and nothing else! i dont know why its not working! help please!
Have you tried different USB ports? Is your computer a desktop or laptop? If it’s a laptop, make sure the computer is hooked up to AC power at the time. Otherwise, to prolong battery life they cut power to the USB ports to where a data connection may not be able to be established.
Are you using the cable that came with it? Is it kinked, or in any way damaged?
If you open Windows Explorer, do you see any additional drives listed? There shuld be 2, each with their own drive letter. On is the player, the other is the card slot.
You might also try calling SanDisk Tech Support.