Since I can't warp to where your computer is, unfortunately I can't give you the exact answer.
Morale(s) of the story:
1) Consult your motherboard's manual that SHOULD HAVE came with your PC.
2) If you don't have it, or just plain lost it, search your vendors site, with the motherboard specs.
3) Try google
4) If all else fails, see step 3.
It\'s 106 miles to Chicago, we\'ve got a full tank of gas, half a pack of cigarettes, it\'s dark and we\'re wearing sunglasses.