I am going to ask a very stupid question that I already believe I know the answer but since I am about to make a purchase for a specific purpose I want to make certain. I need a 4-port powered USB hub. Not using it in conjunction with a computer. I am using it as a base in my Home Theater room to charge my 3D glasses. So the question is, can I use a powered USB hub standalone with power supply to do this without the need of a PC? I should simply be able to plug in the glasses and they will charge without having to put a PC into the mix.....yes? Thanks in advance!