I used a motherboard whose chipset is Q270. Now, I want to use an Xeon cpu that is E2276M(FCBGA1440) on it. It seems that the PICe 1440 would be activated, so that the cpu can work. But when I opened the bios with coffee time，the PICe 1440 is gray, and can not be clicked. So what am I supposed to do to activated the PICe 1440.