THE PROBLEM is that it is recognized as a hard disk "fixed" and not as a removable device.
For example: if you want to sync a music playlist with Windows Media Player you can not, you need to open the folders where the files are listed, and then copy and paste them on the key. So if you have a hundred songs to be transferred and they are in several different folders, it will take your troubles patiently.
Blame the safety standards of Windows 8 and SanDisk ensuing stupidly.
SanDisk Cruzer USB drives produced mid 2013 are avoided and those produced at the end of 2013 do not normally have this problem.
So far no technique has air permit SanDisk Cruzer USB key to be recognized as such ... To avoid so for those who are looking for a REAL USB drive, for others could agree fully.