The Tablet can be used to remotely access various machines. Sneak right click to open the internal tablet gui where you can install up to 6 modules. Right clicking the tablet will give you the gui of the current module. Using the prevDestination and nextDestination keys you can switch between installed modules
Note that to be able to access the remote machine it will have to be near enough or chunkloaded. If it is properly chunkloaded then the tablet will also work from another dimension