You will never make your money back running one of these. As it sits the ROI is nearly 2 years at current prices, meaning you will be priced out by the difficulty adjustments and never break even. Then you add in the costs of a powered hub and you are just throwing money away. I just dont get it....
Generally mining is betting the price will go up and then it pays out. The outlook for LTC is that will go up, thus miners tend to cost more. Take for instance Bitmain, they had L3+ selling for $1250 in June. Now it's $2280, the same machine. Expectancy is the future price of total coins generated would at least pay off this total, before the cost of power makes profit negative.
By the time you find out it's profitable (because the price went up) it will be too late.