Well, crap. It looks like I purchased the wrong display adapter for my 2011 13" MacBook Pro. I purchased the mini dvi to dvi adapter instead of the mini display port to dvi adapter. I didn't realize there were 2 different display adapters. If anyone wants the genuine Apple OEM mini dvi to dvi adapter, please pm me. So, where is the cheapest place to get a mini display port to dvi adapter?