Psu cable and case fan cable questions. Hi I have a foxconn m61pmv motherboard and a foxconn case, the case fan i plugged into the sys fan socket, but the case fan plug has 3 holes whereas there are 4 pin protruding from the motherboard's sys fan socket, is this a problem? ok last question. My psu has both a 24 pin atx power connector to the motherboard (plugged it in) but also a 4 pin atx 12v connector ( i also plugged this in, do i need them both plugged in or just one, (i think the 4 pin powers the cpu and the 24 pin the motherboard, in which case they both need to be plugged in, is this correct? Or do they both power the motherboard, and only one needs to be used, which is it? I read the motherboard manual and it isn't too clear on this. Ps i have everything else sorted, I just don't want to turn on the power and fry my hard work. Thanks, Bob.