It basically allows you to set the tablet into it, and it allows you to connect more devices to the tablet (as the dock acts as a port-expansion system, so you can have it plugged into your TV, an external hard drive, keyboard, mouse, etc). Plus the dock should charge the tablet as well, while it's being used in the dock as well. Not sure if the dock is worth the price they ask for it. There are cheaper USB 3.0 alternatives out there that do the same thing for a fraction of the cost. But that's basically what the dock does--lets you plug more devices into it (you plug the devices into the docking station, and then slide the tablet into the docking station and the devices are then connected to the tablet while it is docked).