SANSA 4GB PLAYER

There are no particular drivers for any USB devices . They are all Plug and Play devices and will be automatically detected unless faulty or if you are using an older version of Windows ( 98 / 95 etc.).
XP /Vista / 7 will detect your device automatically. Try it on some other USB port on the back of the computer instead of the front ( where usually people tend to connect portable devices ) if its a desktop PC.

See the section about the hot fix first----- If you are using Windows XP: you need the following. Windows XP SP2 or higher Windows Media Player 10 or higher
Download and install the latest Windows Media Player if it's not installed.
If you are using Windows Vista: If the player is seen in My Computer when using MTP mode, but not showing in Windows Media Player. Download the hotfix from-->>> http://support.microsoft.com/kb/939211. Run the hotfix.
Refresh the players driver Connect the Sansa player to the PC The screen on your player should turn on, show 'Connected' and indicate the battery charging or full. If the player does not turn on try other USB ports or on another computer if one is readily available. Ensure you are connecting directly to the computer USB port and not to a USB hub. - If there is nothing showing on the screen and the player does show up in as a storage device in an explorer window, then the screen is just not working.
If you receive the error "USB Device Not Recognized" on the computer, the player is most likely failed. Additional troubleshooting is unlikely to correct the problem. Check under Device Manager 1. Right-click My Computer, and select Manage. 2. Click Device Manager on the left pane.
NOTE: Sansa MP3 Players can connect to your computer in MSC or MTP mode. Exceptions are Sansa Connect and Sansa Express which only use MTP mode. MTP mode is the recommended and default method for Sansa Players when used with Windows OS. The Sansa player will show up on Device Manager's right pane as: 1. USB Mass Storage device (if the player is set to MSC) 2. Portable Device (if the player is set to MTP mode)
If there is a yellow exclamation point (!) or question mark (?) beside the device, try to refresh the drivers. Refresh the drivers 1. Right-click the entry with the error mark, select Uninstall. 2. On the top menu, click Action then select Scan for hardware changes.
NOTE: If a device with yellow exclamation point (!) continually appears and disappears, then the player is most likely failed. Additional troubleshooting is unlikely to correct the problem.
Connect using MSC mode Connecting in MSC mode will help determine if there is a problem with MTP mode or with the Auto Detect mode feature of the player. You can use Forced MSC mode or switch the player settings to MSC.
Instructions to connect in Forced MSC mode are listed here: http://kb.sandisk.com/app/answers/detail/a_id/61
Instructions to switch player to MSC mode are listed here: http://kb.sandisk.com/app/answers/detail/a_id/207
If the player is detected in MSC mode but not when set to MTP mode, try to update or reinstall the Sansa firmware
NOTE: Sansa Express and Sansa Connect do not have MSC mode. For Sansa Connect you can try reinstalling the firmware using the Connect Recovery Mode.
Additional troubleshooting notes: If you have replaced the Sansa Player and you still have problems getting it to recognize in the computer, then you may need to try some additional troubleshooting. - Try connecting on another computer. - Try using a different USB cable - Try connecting to the back USB ports which may supply better power. - If only MTP mode is not working, try reinstalling Windows Media Player For Windows XP try also download and install the MTP Porting Kit

Hello,

The Sansa Fuze information support is on next site:
http://kb.sandisk.com/app/answers/detail/a_id/3249/

Sansa Fuze can connect in either MTP or MSC mode.
MTP is Media Transfer Protocol when a software program like Windows
Media Player 10 or higher is installed.
MSC is Mass Storage Class when the player is detected as an external flash drive in "My Computer".

The connection mode can be set to one of the following USB modes:
auto detect:
the player will connect in MTP or MSC mode. It depends on the drivers that are installed for the USB ports for the operating system and extra media software, if the data on the player can be detected. In auto detect
mode, MTP mode detection is only possible when having Windows Media Player 10 or higher installed.
mtp:
detection on operating system Windows XP SP2 or higher, in Windows Media Player 10 or higher.
msc:
detection on operating system Windows in the explorer in "My Computer" and on MAC operating system.

Look in the manual on page 35 = page 38 in the pdf file, how to switch the USB mode under System Settings in the player:
http://mp3support.sandisk.com/sansa/UserManual/FUZE/fuze_userguide_en.pdf

NOTE: MAC computers do NOT support MTP modes of USB conectivity in a MP player. A Sansa player in MTP mode when plugged into a MAC computer will NOT be detected or recognized. MAC computers supports Sansa players in MSC mode Sansa players can only be recognized by a MAC if the USB mode on the Sansa player is set to Auto Detect or MSC.
Check in the System Profiler Open System Profiler from the Utilities folder, which is inside the Applications folder. From the Contents column on the left, under the Hardware header, select USB; the panel to the right will show all the USB devices that the computer recognizes. It may not identify them correctly by name, but it should have the right number of devices listed. . Navigate to USB Mode settings. Sansa View - From the Main Menu, select More > Settings/Options > System Settings > USB Mode.
Sansa Fuze and Sansa Clip+ - From the Main Menu, select Settings > System Settings > USB Mode.
Sansa Clip, e200v1 series, e200v2 series and e200R - From the Main Menu, select Settings > USB Mode.
2. Select Auto Detect, MTP or MSC. e200R - PlayforSure is MTP and Rhapsody is MSC
See this tip posted here on this site for a better explanation on the modes - MTP and MSC. Solve your MP3 Player Connection Problem.

View model: - Turn on then press and hold the rewind button while plugging to the PC Fuse / E200 : Go to Settings > System Settings > USB Mode & select MSC
For the Clip model Go to Settings > USB mode & select MSC

I will have to double-check the documentation that came with that specific MP3 player, but I know that some Sansas will only support upto 2 GB in the expansion slot.

Change the USB Mode to auto-detect and see if you get better results. If that fails, switch entirely to MTP mode.

-Tha Mp3 Doctor

go into settings on the main menu, then go to system settings then go to usb mode and take it off of auto detect and put it on either MSC or MTP

With my Sansa Clip I just have to make sure it is set to MSC, then I can always see the files in the Clip from my computer. I transfer a lot of mp3 files to the Sansa Clip from a SmartCard with a Memorex TravelSync connected to both the Clip and a SmartCard reader. Initially, I couldn't figure out how I could play them on the Clip but not see them when connected to a computer. But when I set the USB Mode to MSC, I could see all the files.

try to reset it