This Airport/Bluetooth board may fix problems with making wireless connections to Wi-Fi routers or to Bluetooth equipped accessories like wireless speakers, headphones, and keyboards.

Product Name: Airport Wireless WiFi Card
Model: Compatible for MacBook Pro Unibody A1278 A1286 A1297
Year:Early 2011-Mid 2012
P/N: BCM94331PCIEBT4AX / BCM94331PCIEBT4

Package Including:
1x AirPort Bluetooth Wireless Card for A1278 A1286 A1297

Compatibility:
-Compatible with MacBook Pro 13" Unibody Early 2011 A1278 (EMC 2419)
For MacBookPro8,1 Early 2011: MC700LL/A (2.3 GHz Core i5) or MC724LL/A (2.7 GHz Core i7)
-Compatible with MacBook Pro 13" Unibody Late 2011 A1278 (EMC 2555)
For MacBookPro8,1 Late 2011: MD313LL/A (2.4 GHz Core i5) or MD314LL/A (2.8 GHz Core i7)
-Compatible with MacBook Pro 13" Unibody Mid 2012 A1278 (EMC 2554)
For MacBookPro9,2 Mid 2012: MD101LL/A (2.5 GHz Core i5) or MD102LL/A (2.9 GHz Core i7)
-Compatible with MacBook Pro 15" Unibody Early 2011 A1286 (EMC 2353-1)
For MacBookPro8,2 Early 2011: MC721LL/A or MC723LL/A
-Compatible with MacBook Pro 15" Unibody Late 2011 A1286 (EMC 2563)
For MacBookPro8,2 Late 2011: MD318LL/A or MD322LL/A
-Compatible with MacBook Pro 15" Unibody Mid 2012 A1286 (EMC 2556)
For MacBookPro9,1 Mid 2012: MD103LL/A or MD104LL/A
-Compatible with MacBook Pro 17" Unibody Early 2011 A1297 (EMC 2352-1)
For MacBookPro8,3 Early 2011: MC725LL/A (2.2 GHz Core i7) or (2.3 GHz Core i7)
-Compatible with MacBook Pro 17" Unibody Late 2011 A1297 (EMC 2564)
For MacBookPro8,3 Late 2011: MD311LL/A (2.4 GHz Core i7) or (2.5 GHz Core i7)
-Both of the Model "Axxxx"and EMC "xxxx " Number are located beneath the lower cover of the laptop, please double check it to determine the compatibility.