My device on my account says Airspan Magic Box Gen 3, does that mean I received a Gen 3? I ordered it on Sunday 9/16/18 and received it today 9/19/18 but my wife won't let me open it until the weekend. The label has the AU545/U545 numbers on the cardboard box which I found it saying that it is Gen 2. Is the Gen 3 the only one with 2 USB ports for charging other devices?