Summary: Initially bought this board as I have used gigabyte before and they were excellent boards ..... BUT The first board I received worked fine to start with, easy to install, lots of overclocking features digital display of POST codes dual bios the list goes on. I set it up to use a portion of my SSD drive as a cache for my HDD (Another good feature of this board). After a couple of hours installing windows and all my programmes etc.
Summary: might just be bad luck, i tried 2 of these boards (various bios'/settings) and both soon had problems with power to fan headers being intermittent and top rear usb ports sometimes not working (had to reconnect mouse). gutted because otherwise this board would be amazing. now decided to try the asus z87 pro instead, hope thats without any issues!