OK the people i brought the RAM from is a place called PCbitz well i'm having a problem with the Ram for what I've learned if you have 4 sticks of ram you could put them into any on the 4 Dimms slot...NOW they are saying i need to play around with the Ram until they work with each other that's not Right is it. By the way my MOB can handle 16GB it a Hewlett-Packard model 1495 i checked the specifications at the Official HP.