As I recall when I first plugged mine into the PC, it asked to download a Samsung driver for Windows. Of course, I resisted and the device showed up as an
MTP device or something. could not send files.(Missing the T-Bolt!) Subsequently, plugged it in again, I accepted the Samsung driver. Now it shows up as a Portable Device with Card & Phone folders with full drag & drop functionality. Connection on GNote2 is MTP. I have noticed that when listening on the PC to music stored on the device, the files are cached to the PC before playing. Not sure if this phone would work as a mass-storage drive on a PC not connected to the internet...