Hi. I just got my new Droid X last week. I love it so far. I've been playing with it a lot and have a lot of it figured out. But I was wondering about the USB connection modes. What is the difference between the modes? - PC Mode. - Windows Media Sync - USB Mass Storage - Charge only Charge Only is self explanatory. And Mass Storage seems pretty obvious also: mounts the card as a disk on your computer. But what about the other two? From what I can tell, the other two also mount the card. But it shows up as a separate "Droid" device in Explorer (I use Windows XP). And only a subset of the directories is visible. It also seems like you don't need to stop the device in order to disconnect the cable. Unlike with Mass Storage mode.