User blog comment:Western Gen/Speculations for Season 12/@comment-10990964-20140730211914/@comment-109.93.239.113-20140801141634

If I good recal, there are two settings for the cubes, one is for storing items in which you need 2 cubes for use, while with other you need only one cube and you cant get the item that was sucked in wile the second setting is active, so maybe the second setting is for teleporting and the first if for storing items.