bad news
-------------
cyberpower battery powered hub is shit
why ?
well : you can power it with an ac/dc adaptor 
       or by plugin it to a pc
       but it s not powered by the batteries !!!
       
what ? well, the batteries are used only if the hub is connected to the pc and the batteries switch is turned on !!!
      that s so lame 
and they write on the doc : mobile battery powered hub
           what s its real use ?  to save the battery of your laptop ??? lol/sad