The first computer I built MANY years ago was an old P3. Well, I decided to go cheap and get an oem motherboard with no print or online manual. Bad choice for a first computer. See if there is little tiny print next to all the pins. Otherwise trial and error. It took me about 3 hours (about 6 years ago, it's been a while), and I finally got the reset button working and just left it at that and used the reset button till I built my next box. I learned my lesson to pay $3 more for retail packaging or make sure the site has a manual in pdf before buying. Sorry there is no easy way out without a manual, good luck, trial and error my freind!