Alright well I just ordered that 4 port usb3 card .. for 19.99 i guess i cant go wrong. I will try it without power first. If not I guess i can snag power from my unused hard drive sled or I can split the sata power from the ODD
As already stated, there's little doubt about needing power on the 4 port card. The 2 port card and a powered hub would be the way to go if you don't want to tap the power.