Taken from Gigabyte's website:
Chipset:
4 USB 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB header)
6 USB 2.0/1.1 ports (2 ports on the back panel, 4 ports available through the internal USB headers)
Chipset + Renesas® uPD720210 USB 3.0 Hub:
4 USB 3.0/2.0 ports on the back panel
This means that you have a USB 2.0 header on the motherboard, and you can use the front one of your case.
But if you really want USB 3.0, you can take a panel like this:
http://www.newegg.com/Product/Product.aspx?Item=9SIA5B31NJ7689&cm_re=usb_3.0_panel-_-9SIA5B31NJ7689-_-Product
I am giving this panel just as an example. I have not used it and I don't know is it good or not, will the cable be long enough for your case and etc. Just do some searching and find what panel fits you best.