So I goofed, I personally believed that it was me who goofed and not NewEgg. I ordered 4GB of Crucial RAM. Interestingly enough the RAM didn't fit despite my search string on NewEgg included "Mac" and "Apple" as far as RAM goes. My question is when I went to stick the RAM in that little gap (for lack of better words) didn't line up. Clearly I had the wrong RAM. Does the placement of that gap change when RAM is buffered or unbuffered? The reason I ask is I was given unbuffered RAM. This is more my curiosity as I'm fully aware of how to rectify the issue. I think I just wanted to see if there was any other way to tell if the RAM is unbuffered. Second to that I find it odd that I would have ordered unbuffered RAM and considering I was reading the specs out over the phone to someone who probably would have caught my error, it is odd. I searched NewEgg, went through my browser's history and found the page where I found the RAM. Turns out the RAM is no longer available. Interesting at best. The other RAM, which appears to be the same RAM (which I saw that night) is still there, still only $10 more. I recall comparing the two pages side by side and saw the only difference on the pages was the price and the CS, the RAM I have is 5 the RAM I didn't buy is 6.