Dude that sucks.
Any of the 3 in the picture I put will work.
Hopefully it did nothing to your board. My friend did it once, and his was OK.
EDIT: O yeah it will make your I/O panel actually line up too.
Let me know if it will still work.
I can't believe I gueesed that. It was just a shot in the dark. I figured it was something simple.