hello all i have been doing research looking to upgrade my early 2011 15" MBP airport card. I had posted here asking if the card could be upgraded and was basically was told no. well i looked at teardowns of newer macs and found that the 2012 13" non retina MBP had the same looking connector. After find this out i started looking at this card more and found this post saying you need to have part number of BCM94331PCIEBT4CAX for bluetooth 4.0. i also found this post showing that his early 2011 15" MBP worked with this card. So after finding that i did some ebay searching and found this its a replacement card not oem but looks like it should work and it has the correct part number. im looking to order this very soon and i will post back with results. if anyone here has had experience with this replacement card please let us know what you think.