If you are lucky, your computer may have one or two USB 3.0 ports. My desktop only has a single USB 3.0 port and then has a few USB 2.0 ports as well. It's still common for notebooks and netbooks to only offer a single USB 3.0 port and this can be a big issue for you if you have an external HDD that uses USB 3.0 and a flash drive that supports the faster interface as well.
Trendnet has unveiled a new USB 3.0 hub that adds additional ports to any computer. The hub has four ports on it and needs one of your ports for connectivity to your computer. That means you get a net extra of three USB 3.0 ports. That should be enough to allow you to connect more USB 3.0 devices to your computer, assuming those devices aren't so fat that they block the port beside whatever you are plugging in.
The four port hub is called the TU3-H4 and the thing will work when plugged into USB 2.0 ports as well. I am used to seeing low prices on USB hubs, so this USB 3.0 hub looks very expensive to me at $79.99. The hub will ship "shortly" with nothing specific on the date. Trendnet also has add in cards for notebooks and desktops that will put a couple USB 3.0 ports in your computer if you don't have any USB 3.0 love by default.