USB ports, I need More!!! Help

Hey, so here is the deal, the G73 only comes with 4 Usb ports, and I got them pretty much saturated, since I got a Cooler, the Mouse, An External Drive and a BR Drive connected, I need to get more since I want to get me a 5.1 audio card.

Could anyone recommend any USB port replicator, need to be external powered since both the External drive and the BRD draw power from it and pulling it from the laptop just won't do.