At work, whenever I put in a USB stick, the computer automatically assigns the USB the same letter as another networked drive. Why does it do this? Why doesn't it find another, unused letter? I always have to disconnect the network drive to be able to see the USB. And then, even after disconnecting, it reconnects after startup (which may not necessarily be a problem, just a way the network is setup). How can I get the USB to be assigned to a different letter?