in one of the gigabyte motherboards i was looking at (GA H110M S2) it has a total of 4 USB 3.0 ports, two through the back panel and two through internal usb headers. but then under the internal I/O connectors of the same motherboard it says there is only 1 USB 3.0 header. as i mentioned in the beginning the motheboard should have 2 usb ports through internal headers but in the internal I/O connectors it shows only one. i cannot get it. please help