[robko]

So what are you trying to do? If you want to sync via the desktop, just hit the sync button on the desktop itself. If you then want to read on the Kobo you need to eject it and remove it from the computer. If you want to continue charging plug it back in and click cancel and you can charge it while you read newly sync'd books. When the Kobo is displaying "Connected and Charging" page you can manage the Kobo from the computer only -- either via desktop, using Calibre, or drag and dropping files onto it.