I assume that same charger charges the tablet. Do you even get a light on the dock when you plug it in? Have you checked for updates with the dock plugged in? When the dock is attached does the battery from the dock appear anywhere?
Yes it´s the same charge that charges the tablet.The tablet itself charges, but when it´s time to chrge the dock the small light beside the plug stays flashing in red for hours. Whem the tablet and the dock are connected the battery sign appears on the screen of the tablet.