The Sansa c140 can be operated in MSC and MTP mode for transferring and deleting music files.
See also setting USB mode for autodetect or MSC mode
on page 16 of the manual: link to the Sansa c100 series manual
- For deleting files a connection to a computer has to be made in either MSC or MTP mode, see page 10 of the manual.
mode means that a computer will see the player as a removable disk
It's like exploring the computer detecting the player as an external memory, showing up as a drive letter with about 1 GB of memory.
Before disconnecting the player, always safely remove hardware, the icon in the bottom taskbar on the right.
mode means that a computer has software installed like Windows Media Player 10
and in this software, when started, the player is being recognized as Sansa c140.
Before disconnecting the player, wait for the message that it is allowed to disconnect the device.
How to use Windows Media Player 10 ? See the site of Microsoft:
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