Unknown small component came loose

I have looked very carefully at both the logic board and the video card. There are just no small holes. I notice that all of the similar components are located inside the outline of a square drawn on the board, so it should be pretty easy to find 2 holes inside one of these squares.

I have not removed the heat sink. I don't trust myself to be able to replace it even though it appears to be held in place by just 5 screws. Nonetheless, is my next job to remove the heat sink and look at that part of the board? It just seems strange that a part would fall off in that protected area.

I was hoping someone might have a similar MDD and be able to spot the part with the identifier I gave.

I've got three here, different speeds. Take some pictures of the video card and the board and upload them. Also is the machine single or dual processor and what speed is it?

Thanks for the response. My computer is a dual 867 MHz. I didn't see a place to upload pics to ifixit, so I just assumed one couldn't. I just read "Formatting help" and it says one can only use links and font styles in a comment. Can you please tell me how to upload pics?

In the lower left hand corner of your screen is a tab called Images. Click on it to find out how to upload.