hi, I just bought the powercase for my zenpad z380cx, I am super new to any technology such as this and would like to know/understand, what is the point of the dongle? the case will not close with it in it that I can tell, do I need this, will it charge with out it, or am I just trying to charge this all wrong, right now I have the case charging and my tablet seperatly, I would like to be able to plug this case in just like I did the plain tablet, can someone advise me please 
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